Britney Spears
, Kim Kardashian and Heidi Klum aren't afraid to show a lot of skin!

The singer showed off her décolletage in a low-cut beaded black illusion dress at the Elton John AIDS Foundation Academy Awards Viewing Party in West Hollywood on Sunday night. She wore her newly-dyed red hair down with loose waves.

While the 32-year-old turned heads in her cleavage-baring gown, Kim also was flaunting her hot bod in red low-cut gown, adding another pop of color with a sexy red lip.

Heidi wasn't showing as much as Britney and Kim, but the stunning supermodel looked picture perfect in a bold black beaded gown at the Oscars viewing party.

And while even Courtney Stodden attended an Academy Awards event (see her revealing look in the gallery above), there were still some A-list actors on the town too!

Winners like Lupita Nyong'o, Jared Leto and Cate Blanchett all proudly showed off their little gold men as they got down at the Governors Ball and the Vanity Fair After-Party.

Other awesome sightings included Brad Pitt and Angelina JolieJennifer Lawrence, Taylor Swift, Kristen Bell, Ellen DeGeneres, Leonardo DiCaprio, the sexy Hemsworth brothers and Amy Poehler ... who was photographed trying to do a headstand!

And then there was Lady Gaga and Kelly Osbourne, who appeared to put an end to their feud by choking each other out for the cameras!

Paula Patton also showed off her sexy post-split physique, letting Robin Thicke know what he's missing these days.

Click "Launch Gallery' above to see all of the after-party madness!

Want more Oscar goodness? Check out even more coverage below:

- The Academy Awards: What You Didn't See on TV!
- Academy Awards: All the Red Carpet Photos
- The Most Epic Oscar Selfie of ALL TIME
- Oscar After-Party Madness: See Who Got Down!
- The Can't-Miss Moments from the Oscar Telecast
- Ellen DeGeneres' Best Opening Monologue Jokes
- Academy Awards: The Winners List
- The Best Dressed List
- The Worst Dressed List
- Angelina Jolie Stuns on the Red Carpet
- How Did Lady Gaga Look at the Oscars?

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