Katy Perry's ex, Russell Brand, hit the red carpet in his signature black skinny jeans and a shiny jacket. Eddie Redmayne looked dashing in his tartan suit by Gucci. Emma Watson flashed her toned midriff in Balenciaga. Rita Ora kept everyone buzzing with her black and yellow gown. Suit and tie? That would be a yes for Justin Timberlake who made his way to the other side of the pond for the event! Every men's event needs a couple of hot ladies, so check out Rosie Huntington-Whiteley and Suki Waterhouse.