Style crush alert: the McCartney clan were out with Liv and the two Kates showing off the Brit designer's beautiful and varied gowns, Jessica channeled the mermaid look in Michelle O's favourite Jason Wu:
Diane was cute in Chanel, Claudia was a cut above the rest in Versace, Anne Hathaway opted for 60s sex kitten complete with biggest-in-the-house hair:
Agyness looked grown-up oozing Hollywood glamour in a floor-length shimmering Burberry gown, Rihanna channeled Prince through her fierce D&G tux and Madonna stepped back to the 80s with her brave Louis Vuitton get up:
