The lady of the hour, Carey Mulligan, who stars as Daisy Buchanan in the flick, looked stunning in a red dress by Lanvin. Isla Fisher glammed up for the red carpet too, in a floral Dolce & Gabanna. Leonardo DiCaprio aka Gatsby himself looked every bit the part in a Prada suit. Tobey Maguire also suited up in Yves Saint Laurent with his wife Jennifer Meyer by his side. Jay-Z, who served as the executive producer on both the film and its soundtrack looked dapper as always in Tom Ford..