The biggest night in fashion marked the opening of Alexander McQueen: Savage Beauty, an exhibition of the late Brit's finest creations.

Alexander McQueen's successor Sarah Burton was the toast of the event following her triumph at Friday's (29Apr11) royal wedding, for which she designed Catherine, Duchess of Cambridge's stunning bridal gown.

Other stars showing off their outfits included Isla Fisher, Renee Zellweger, Freida Pinto, Michelle Williams and Kanye West.