Nicole Richie always surpsises us with her Halloween costumes each year! This year she teamed up with longtime friend and stylist Jamie Mizrahi (née Schneider) to go as Siegfried & Roy. The duo are former entertainers featuring magic acts who became known for their appearances with whtie lions and white tigers. Carlos Lopez also joined them as one of the tigers! They were also pictured with their friend and singer Katy Perry who donned a remarkable costume as Hillary Clinton.