Nick Cannon throws Amber Rose a surprise party

Nick Cannon surprised his new protégée Amber Rose with a birthday party in LA’s Studio City on Monday.

Rose, who turned 31 on Tuesday, was told she was going to a costume-themed dinner and dressed up as a zombie Peg Bundy. But instead she was whisked off to a private home and greeted there by Chris Brown and Karrueche Tran, Blac Chyna, Nelly, Carmen Electra and Rose’s rumored boyfriend, Nick Simmons, who wore jeans and a sweatshirt that read, “This is My Halloween Costume.”