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November 9, 2016 Where: At 'The Edge of Seventeen' premiere in Los Angeles. Photo: 2016 Jason LaVeris
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September 18, 2016 Where: At 'The Edge of Seventeen' premiere during the Toronto International Film Festival. Photo: George Pimentel/WireImage
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September 7, 2016 Where: At the Tom Ford fashion show during New York Fashion Week. Photo: Presley Ann/Patrick McMullan via Getty Image
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June 19, 2016 Where: At the iHeart MuchMusic Video Awards. Photo: Sonia Recchia/Getty Images
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February 15, 2016 Where: At the Republic Records Grammy celebration in Los Angeles. Photo: Kevin Mazur/Getty Images
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September 19, 2015 Where: At the iHeartRadio Music Festival Night 2 in Las Vegas. Photo: David Livingston/Getty Images
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September 17, 2015 Where: At the Streamy Awards in Los Angeles.
Photo: Paul Archuleta/FilmMagic
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September 3, 2015 Where: At the photocall for Women's Tales during the Venice Film Festival. Photo: Danny Martindale/WireImage
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August 11, 2015 Where: At a special screening of Archer Gray'sTen Thousand Saints . Photo: Angela Weiss/Getty Images
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June 21, 2015 Where: At the MuchMusic Video Awards in Toronto. Photo: George Pimentel/WireImage
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May 8, 2015 Where: At the world premiere of Pitch Perfect 2, in Los Angeles. What: Dress by Dolce & Gabbana. Photo: Jon Kopaloff/FilmMagic
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April 28, 2015 Where: At the Christopher Kane x mytheresa.com dinner in Los Angeles. Photo: Stefanie Keenan/Getty Images
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March 29, 2015 Where: At the iHeartRadio Music Awards in Los Angeles, California. Photo: Steve Granitz/WireImage
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May 5, 2014 Where: At the Costume Institute gala. What: Prabal Gurung dress. Photo: 2014 Getty Images
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April 28, 2014 Where: At The Breast Cancer Research Foundation Hot Pink Party in New York City. Photo: Jamie McCarthy/Getty Images
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August 11, 2013 Where: At the Teen Choice Awards in Universal City, California.
What : Dress by House of Holland; shoes by Oscar ... more
August 11, 2013 Where: At the Teen Choice Awards in Universal City, California.
What : Dress by House of Holland; shoes by Oscar Tiye; clutch by Amanda Pearl.
Photo: Jason Merritt/Getty Images
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July 18, 2013 Where: At a press event for Ender's Game at Comic-Con.
What: Michael Kors blouse and trousers; Christian Louboutin flats. Photo: ... more
July 18, 2013 Where: At a press event for Ender's Game at Comic-Con.
What: Michael Kors blouse and trousers; Christian Louboutin flats. Photo: Joe Scarnici/2013 Getty Images
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June 3, 2013 Where: At the CFDA Awards in New York City.
What : Dress by Suno.
Photo: Kevin Mazur/2013 Kevin Mazur
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April 20, 2013 Where: At City Year Los Angeles's spring break event in Culver City, California.
What: Dress by Dolce & Gabbana; shoes by Mar... more
April 20, 2013 Where: At City Year Los Angeles's spring break event in Culver City, California.
What: Dress by Dolce & Gabbana; shoes by Marni. Photo: Chelsea Lauren/2013 Getty Images
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April 18, 2013 Where: At the CinemaCon Awards in Las Vegas, Nevada.
Photo: Ethan Miller/2013 Getty Images
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April 10, 2013 Where : At the Coach Evening to Benefit Children's Defense Fund in Santa Monica, California. Photo: Alberto E. Rodriguez/2013 Gett... more
April 10, 2013 Where : At the Coach Evening to Benefit Children's Defense Fund in Santa Monica, California. Photo: Alberto E. Rodriguez/2013 Getty Images
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February 24, 2014 Where: At the Vanity Fair Oscar Party in Los Angeles, California.
What: Dress by Valentino. Photo: Pascal Le Segretain/2013 Ge... more
February 24, 2014 Where: At the Vanity Fair Oscar Party in Los Angeles, California.
What: Dress by Valentino. Photo: Pascal Le Segretain/2013 Getty Images
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January 22, 2013 Where: At the Chanel Couture show in Paris, France. Photo: Julien M. Hekimian/2013 Getty Images
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December 15, 2012 Where: At a celebration for her sweet 16 in Los Angeles, California.
What: Jumpsuit by Louis Vuitton. Photo: Alexandra Wyman/2... more
December 15, 2012 Where: At a celebration for her sweet 16 in Los Angeles, California.
What: Jumpsuit by Louis Vuitton. Photo: Alexandra Wyman/2012 Getty Images
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May 7, 2012 Where: At the "Schiaparelli and Prada: Impossible Conversations" Costume Institute Gala at the Metropolitan Museum of Art i... more
May 7, 2012 Where: At the "Schiaparelli and Prada: Impossible Conversations" Costume Institute Gala at the Metropolitan Museum of Art in New York City.
Photo: Larry Busacca/2012 Getty Images
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November 22, 2011 Where: At the Hollywood Christmas Parade Concert in Universal City, California. Photo: Chelsea Lauren/2011 Chelsea Lauren
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November 15, 2011 Where: At Tod's Dinner to Celebrate Elle's December Issue and Tod's Signature Collection in Los Angeles, California.
What: Dre... more
November 15, 2011 Where: At Tod's Dinner to Celebrate Elle's December Issue and Tod's Signature Collection in Los Angeles, California.
What: Dress by Chloë Sevigny for Opening Ceremony; shoes by Miu Miu. Photo: Donato Sardella/2011 Donato Sardella
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October 27, 2011 Where: At the Chanel Boutique event in Los Angeles, California.
What: Dress, shoes, and clutch by Chanel. Photo: Jason Merritt/... more
October 27, 2011 Where: At the Chanel Boutique event in Los Angeles, California.
What: Dress, shoes, and clutch by Chanel. Photo: Jason Merritt/2011 Getty Images
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October 22, 2011 Where: At Variety 's "Power of Youth" event in Hollywood, California.
What: Jacket and shoes by Chanel; top by Jil San... more
October 22, 2011 Where: At Variety 's "Power of Youth" event in Hollywood, California.
What: Jacket and shoes by Chanel; top by Jil Sander; shorts by J Brand. Photo: Todd Williamson/2011 Todd Williamson
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October 19, 2011 Where: At the British Fashion Council's L.A. Intitiative cocktail party in West Hollywood, California.
What: Dress by Mary Katr... more
October 19, 2011 Where: At the British Fashion Council's L.A. Intitiative cocktail party in West Hollywood, California.
What: Dress by Mary Katrantzou. Photo: Jason LaVeris/2011 Jason LaVeris
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October 5, 2011 Where: At the Miu Miu spring 2012 runway show in Paris, France.
What: Dress, clutch, and shoes by Miu Miu. Photo: Pascal Le Segr... more
October 5, 2011 Where: At the Miu Miu spring 2012 runway show in Paris, France.
What: Dress, clutch, and shoes by Miu Miu. Photo: Pascal Le Segretain/2011 Getty Images
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September 26, 2011 Where: At the C.S.A. Artios Awards in Beverly Hills, California.
What: Cape by Maje; clutch by Edie Parker. Photo: Brian To/2... more
September 26, 2011 Where: At the C.S.A. Artios Awards in Beverly Hills, California.
What: Cape by Maje; clutch by Edie Parker. Photo: Brian To/2011 Brian To
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September 23, 2011 Where: At the Teen Vogue Young Hollywood Party in collaboration with Net-a-Porter in Hollywood, California.
What: Dress... more
September 23, 2011 Where: At the Teen Vogue Young Hollywood Party in collaboration with Net-a-Porter in Hollywood, California.
What: Dress by Versace; clutch and shoes by Jimmy Choo.
Photo: Jerod Harris/2011 WireImage
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September 19, 2011 Where: At Cody Simpson's album release party for Coast to Coast in Hollywood, California.
What: Top and shorts by Carven; sh... more
September 19, 2011 Where: At Cody Simpson's album release party for Coast to Coast in Hollywood, California.
What: Top and shorts by Carven; shoes by Nicholas Kirkwood. Photo: Michael Tran/2011 Michael Tran
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August 6, 2011 Where: At the Glee: the 3D Concert premiere in Westwood, California.
What: Dress by Louis Vuitton; clutch by Jimmy Choo. Photo: G... more
August 6, 2011 Where: At the Glee: the 3D Concert premiere in Westwood, California.
What: Dress by Louis Vuitton; clutch by Jimmy Choo. Photo: Gregg DeGuire/2011 Gregg DeGuire
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July 19, 2011 Where: At the Miu Miu presents Lucrecia Martel's Muta event in Beverly Hills, California.
What: Dress and shoes by Miu Miu; clutch... more
July 19, 2011 Where: At the Miu Miu presents Lucrecia Martel's Muta event in Beverly Hills, California.
What: Dress and shoes by Miu Miu; clutch by Prada. Photo: Alberto E. Rodriguez/2011 Getty Images
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June 18, 2011 Where: At the Cars 2 premiere in Hollywood, California.
What: Dress by Philosophy di Alberta Ferretti; shoes by Jimmy Choo; clutch... more
June 18, 2011 Where: At the Cars 2 premiere in Hollywood, California.
What: Dress by Philosophy di Alberta Ferretti; shoes by Jimmy Choo; clutch by H&M. Photo: Gregg DeGuire/2011 Gregg DeGuire
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June 9, 2011 Where: At the Tommy Hilfiger and Lisa Birnbach Celebration of Prep World in Los Angeles, California.
What: Shirt, skirt, jacket, an... more
June 9, 2011 Where: At the Tommy Hilfiger and Lisa Birnbach Celebration of Prep World in Los Angeles, California.
What: Shirt, skirt, jacket, and shoes by Tommy Hilfiger. Photo: John Sciulli/2011 WireImage
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June 5, 2011 Where: At the MTV Movie Awards in Los Angeles, California.
What: Suit by Louis Vuitton; clutch by Edie Parker. Photo: Jason Merrit... more
June 5, 2011 Where: At the MTV Movie Awards in Los Angeles, California.
What: Suit by Louis Vuitton; clutch by Edie Parker. Photo: Jason Merritt/2011 Getty Images
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May 20, 2011 Where: At the Young Hollywood Awards in Los Angeles, California.
What: Top, shoes, and skirt by Miu Miu. Photo: Gregg DeGuire/2011 ... more
May 20, 2011 Where: At the Young Hollywood Awards in Los Angeles, California.
What: Top, shoes, and skirt by Miu Miu. Photo: Gregg DeGuire/2011 Gregg DeGuire
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May 2, 2011 Where: At the "Alexander McQueen: Savage Beauty" Costume Institute Gala at the Metropolitan Museum of Art, in New York City... more
May 2, 2011 Where: At the "Alexander McQueen: Savage Beauty" Costume Institute Gala at the Metropolitan Museum of Art, in New York City.
What: Dress by Stella McCartney; shoes by Nicholas Kirkwood. Photo: Dimitrios Kambouris/2011 FilmMagic
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April 14, 2011 Where: At InStyle's "Dinner With a Designer" for Tory Burch in West Hollywood, California.
What: Top, skirt, and shoes ... more
April 14, 2011 Where: At InStyle's "Dinner With a Designer" for Tory Burch in West Hollywood, California.
What: Top, skirt, and shoes by Tory Burch. Photo: John Shearer/2011 Getty Images
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March 9, 2011 Where: At the Miu Miu fall 2011 runway show in Paris, France.
What: Dress by Miu Miu. Photo: Dominique Charriau
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February 27, 2011 Where: At the Academy Awards in Hollywood, California.
What: Dress by Marchesa; shoes and clutch by Ferragamo; jewelry by Fre... more
February 27, 2011 Where: At the Academy Awards in Hollywood, California.
What: Dress by Marchesa; shoes and clutch by Ferragamo; jewelry by Fred Leighton. Photo: Kevin Mazur
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February 25, 2011 Where: At the Women in Film Pre-Oscar Cocktail Party in West Hollywood, California.
What: Dress by Vionnet; shoes by Aldo. Ph... more
February 25, 2011 Where: At the Women in Film Pre-Oscar Cocktail Party in West Hollywood, California.
What: Dress by Vionnet; shoes by Aldo. Photo: Gregg DeGuire/2011 Gregg DeGuire
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February 24, 2011 Where: At The Hollywood Reporter's Big 10 Party in Los Angeles, California.
What: Dress by Tommy Hilfiger; shoes by Dolce &... more
February 24, 2011 Where: At The Hollywood Reporter's Big 10 Party in Los Angeles, California.
What: Dress by Tommy Hilfiger; shoes by Dolce & Gabbana. Photo: Frederick M. Brown/2011 Getty Images
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February 17, 2011 Where: At the True Grit press conference in Tokyo, Japan.
What: Dress by See by Chloé. Photo: Jun Sato/2011 Jun Sato
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February 15, 2011 Where: With Cheri Steinfeld at Narita International Airport in Narita, Japan.
What: Pants by Free City; shoes by Ugg.
... more
February 15, 2011 Where: With Cheri Steinfeld at Narita International Airport in Narita, Japan.
What: Pants by Free City; shoes by Ugg.
Photo: Jun Sato/2011 Jun Sato
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February 13, 2011 Where: At the Orange British Academy Film Awards in London, England.
What: Dress and clutch by Miu Miu. Photo: Jo... more
February 13, 2011 Where: At the Orange British Academy Film Awards in London, England.
What: Dress and clutch by Miu Miu. Photo: Jon Furniss/2011 Jon Furniss
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February 12, 2011 Where: At the British Academy Film Awards nominees party in London, England.
What: Dress by Valentino.
Photo: Nick Harv... more
February 12, 2011 Where: At the British Academy Film Awards nominees party in London, England.
What: Dress by Valentino.
Photo: Nick Harvey/2011 Nick Harvey
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February 10, 2011 Where: At the True Grit premiere in Berlin, Germany.
What: Dress by Miu Miu. Photo: Dominique Charriau/2011 Dominique Ch... more
February 10, 2011 Where: At the True Grit premiere in Berlin, Germany.
What: Dress by Miu Miu. Photo: Dominique Charriau/2011 Dominique Charriau
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February 10, 2011 Where: With Josh Brolin and Jeff Bridges at the True Grit photocall during the Berlin International Film Festival in Berlin, Ge... more
February 10, 2011 Where: With Josh Brolin and Jeff Bridges at the True Grit photocall during the Berlin International Film Festival in Berlin, Germany.
Photo: Dominique Charriau/2011 Dominique Charriau
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February 7, 2011 Where: At the Academy Awards nominations luncheon in Beverly Hills, California.
What: Dress by Moschino Cheap and Chic; shoes ... more
February 7, 2011 Where: At the Academy Awards nominations luncheon in Beverly Hills, California.
What: Dress by Moschino Cheap and Chic; shoes by Aldo.
Photo: Kevin Winter/2011 Getty Images
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February 4, 2011 Where: At the Virtuosos Award Tribute during the Santa Barbara International Film Festival in Santa Barbara, California.
What:&... more
February 4, 2011 Where: At the Virtuosos Award Tribute during the Santa Barbara International Film Festival in Santa Barbara, California.
What: Dress by Alberta Ferretti; clutch by H&M; shoes by Aldo. Photo: Jason Merritt/2011 Getty Images
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January 30, 2011 Where: At the Screen Actors Guild Awards in Los Angeles, California.
What: Dress and shoes by Prada.
Photo: Jon Kopaloff/20... more
January 30, 2011 Where: At the Screen Actors Guild Awards in Los Angeles, California.
What: Dress and shoes by Prada.
Photo: Jon Kopaloff/2011 Jon Kopaloff
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January 16, 2011 Where: At the Golden Globe Awards in Beverly Hills, California.
What: Dress by Prabal Gurung; clutch by Amanda Pearl; shoes by... more
January 16, 2011 Where: At the Golden Globe Awards in Beverly Hills, California.
What: Dress by Prabal Gurung; clutch by Amanda Pearl; shoes by Ferragamo; jewelry by Tiffany & Co. Photo: Jason Merritt/2011 Getty Images
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January 15, 2011 Where: At the BAFTA Los Angeles Awards Season Tea Party.
What: Dress by Marc Jacobs. Photo: Gregg DeGuire/2011 Gregg DeGuire
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January 14, 2011 Where: At the Critics' Choice Movie Awards in Hollywood, California.
What: Dress by Marchesa; shoes by Jimmy Choo. Photo... more
January 14, 2011 Where: At the Critics' Choice Movie Awards in Hollywood, California.
What: Dress by Marchesa; shoes by Jimmy Choo. Photo: Gregg DeGuire/2011 Gregg DeGuire
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January 14, 2011 Where: At the AFI Awards in Los Angeles, California.
What: Dress by Chloé.
Photo: Alberto E. Rodriguez/2... more
January 14, 2011 Where: At the AFI Awards in Los Angeles, California.
What: Dress by Chloé.
Photo: Alberto E. Rodriguez/2011 Getty Images
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January 11, 2011 Where: At the National Board of Review of Motion Pictures Gala at Cipriani 42nd Street, in New York City.
What: Dress by Jenny ... more
January 11, 2011 Where: At the National Board of Review of Motion Pictures Gala at Cipriani 42nd Street, in New York City.
What: Dress by Jenny Packham. Photo: Mike Coppola/2011 Getty Images
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January 8, 2011 Where: At the American Masters - Jeff Bridges: The Dude Abides premiere in Beverly Hills, California.
What: Dress by Mosc... more
January 8, 2011 Where: At the American Masters - Jeff Bridges: The Dude Abides premiere in Beverly Hills, California.
What: Dress by Moschino Cheap and Chic; shoes by Serigo Rossi; clutch by Kelly Locke. Photo: David Livingston/2011 Getty Images
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December 14, 2010 Where: At the premiere of True Grit in New York City.
What: Dress by Moschino Cheap and Chic; shoes by Christian Louboutin. P... more
December 14, 2010 Where: At the premiere of True Grit in New York City.
What: Dress by Moschino Cheap and Chic; shoes by Christian Louboutin. Photo: Michael N. Todaro/2010 Michael N. Todaro
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December 2010 Where: In True Grit. Photo: Lorey Sebastian/Paramount/Courtesy Everett Collection
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December 13, 2010 Where: At a taping of Late Show With David Letterman in New York City.
What: Dress by Topshop; shoes by Opening Ceremony. Phot... more
December 13, 2010 Where: At a taping of Late Show With David Letterman in New York City.
What: Dress by Topshop; shoes by Opening Ceremony. Photo: Jeffrey Ufberg/2010 Jeffrey Ufberg
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December 9, 2010 Where: At the HFPA/InStyle Party Announcing Miss Golden Globe in Los Angeles, California.
What: Dress by Stella McCartney; shoe... more
December 9, 2010 Where: At the HFPA/InStyle Party Announcing Miss Golden Globe in Los Angeles, California.
What: Dress by Stella McCartney; shoes by Opening Ceremony. Photo: Jon Furniss/2011 Jon Furniss
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December 5, 2010 Where: At the Tron: Legacy premiere in London, England.
What: Dress by Lanvin for H&M; shoes by Opening Ceremony. Phot... more
December 5, 2010 Where: At the Tron: Legacy premiere in London, England.
What: Dress by Lanvin for H&M; shoes by Opening Ceremony. Photo: Jon Kopaloff/2010 Jon Kopaloff
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November 4, 2010 Where: At the BAFTA Los Angeles Britannia Awards.
What: Dress by 3.1 Phillip Lim; shoes by Christian Louboutin.
Ph... more
November 4, 2010 Where: At the BAFTA Los Angeles Britannia Awards.
What: Dress by 3.1 Phillip Lim; shoes by Christian Louboutin.
Photo: Michael Tran/2010 Michael Tran
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October 24, 2010 Where: At Variety 's "Power of Youth" event in Hollywood, California.
What: Shoes by Matisse. Photo: Chelsea Laur... more
October 24, 2010 Where: At Variety 's "Power of Youth" event in Hollywood, California.
What: Shoes by Matisse. Photo: Chelsea Lauren/2010 Chelsea Lauren
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October 18, 2010 Where: At the "ELLE Honors Hollywood's Most Esteemed Women" event in Los Angeles, California.
What: Dress and shoes b... more
October 18, 2010 Where: At the "ELLE Honors Hollywood's Most Esteemed Women" event in Los Angeles, California.
What: Dress and shoes by Calvin Klein. Photo: Gregg DeGuire/2010 Gregg DeGuire
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October 1, 2010 Where: At the Teen Vogue Young Hollywood Party in Hollywood, California.
Photo: Jeffrey Mayer/2010 Jeffrey Mayer
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September 30, 2010 Where: At the premiere of Secretariat in Hollywood, California.
What: Dress by Marc by Marc Jacobs.
Photo: Jeffrey Mayer/2... more
September 30, 2010 Where: At the premiere of Secretariat in Hollywood, California.
What: Dress by Marc by Marc Jacobs.
Photo: Jeffrey Mayer/2010 Jeffrey Mayer