Olivia Wilde Went Shirtless in a Tux

Olivia Wild attends the World Premiere of "Rush" at Odeon Leicester Square on September 2, 2013 in London, England. Photo: Eamonn M. McCormack/Getty Images

In London yesterday, Olivia Wilde showed up to the world premiere of Rush in a simple black tuxedo by Gucci — except the actress opted to forgo wearing a blouse or even a bra, so the look morphed into something bold and memorable. (She's bringing back the bare décolletage trend all on her own.) Wilde let her wavy hair fall on her shoulders, wore Piaget diamond earrings, painted her lips a bright red, and smized in front of a race car, just so no one forgets what this movie is about.