The Black Eyed Peas singer stays on trend in harem pants during a London outing. Plus: Rihanna, Audrina Patridge, Kate Hudson and more

TIE ONE ON

After a bright arrival earlier in the week, Twilight's Robert Pattinson brings out his best threads – a Dolce and Gabbana tuxedo – for amfAR's annual Cinema Against AIDS gala during the Cannes Film Festival in Antibes, France, on Thursday.