Together! On a screen!
She's adding smell-o-vision to her shows.
Katy doesn't know why she's there, either.
Each won four awards.
Eminem's 'Recovery' is the best-selling album since 2007.
Plus, Solange Knowles tried out some thigh-length hair extensions.
Scarlett Johansson, Mark Ruffalo, Cher, and more in this month's roundup.
Perhaps Perry didn't appreciate his bid to land her a place on the tabloids' "Stars Without Makeup" lists.
Hear "Part of Me."
Plus, Nicki Minaj in bringing back her Pink Friday MAC lipstick.
Plus: Jens Lekman, Atlas Sound, Tricky, Justin Beiber, Dandy Warhols, Phoenix, Florence and the Machine, and Vampire Weekend.
Anything Gwyneth can do, she can do ... also.
Also, she and Russell Brand coordinated their outfits.
Plus: Girl Talk, Usher, My Chemical Romance, Wu-Tang Clan, and more.
It's totally great.
It's her song, she can do what she wants to?
The pop star appears on the show, and it's pretty much a mess.
Also, Michael Kors is launching a new fragrance.