Celebrity Halloween Costume Roundup

Rihanna, pictured with Ice-T’s wife Coco as porn star “Coco Amour,” looked grrreat in a sexy Tony the Tiger (or Tigger) costume at Mariah Carey and Nick Cannon’s Halloween party in New York City on Saturday (Oct. 31).

Hit the jump to see what Beyoncé, Christina Aguilera, Aubrey O’Day, Bow Wow, Jermaine Dupri, Melody Thornton, La Toya Jackson, Russell Simmons, Jordin Sparks, Kat DeLuna, Teyana Taylor, Trina, and more dressed as for Halloween.