Nick Cannon celebrated his 29th birthday with a party at The Bank nightclub inside the Bellagio in Las Vegas following his wife’s show at the Palms Resort & Casino on Saturday (Oct. 10). Mrs. Cannon, Aubrey O’Day, Mekhi Phifer, and Nick’s mother toasted the birthday boy. Watch Mariah sing “Happy Birthday” to her husband, “DJ Sexy Fingers,” below.