After a post-show wardrobe change, Cameron Diaz made a memorable entrance at the Vanity Fair party in a one-shoulder metallic Victoria Beckham dress.

Cameron looked almost unrecognizable at the Academy Awards with her Oscar de la Renta ball gown, flowing locks, and glamour-girl red lipstick, and she kept the look going for the after-parties, but with a more manageable flirty frock

The Victoria Beckham Fall 2010 razor cut sheath mixed platinum and gold metallic’s which was combined with soft cascading shoulder detail. Simply stunning!

Across town Victoria Beckham watched the awards ceremony at the annual Elton John AIDS Foundation viewing party, held at the Pacific Design Center.

“It’s very exciting to be able to come here and support Elton,” said Victoria. “He’s raised over $175 million dollars for this foundation. To be able to come here and help raise awareness and money? I’m honored.”

Beckham wore a dress from her own Victoria Beckham Collection that looked absolutely sensational on her. The dress, from her Fall 2010 collection, has a softly draped asymmetrical neckline with cinched waist that floats into a geometric printed gown.