Britney Spears cleaned up nice and went for an elegant and classy look at the celebrity heavy 21st Annual Elton John AIDS Foundation’s Oscar Viewing Party on Sunday.

Credit: Fayes Vision/Wenn.com

The ex-‘X Factor’ judge who is rumored to be heading to Vegas with a new long-term gig, was among a crowd of heavy hitters including Steven Tyler, Randy Jackson, Dave Grohl, Molly Sims, a low key Zac Efron, and a hilarious looking Jim Carrey wearing funny boots shaped like huge feet.