Most Controversial Celebrity Halloween Costumes

Rihanna dressed as a weed queen





Chris Brown (center) dressed as a member of the Taliban





Deryck Whibley and his GF Ari Cooper dressed up as his ex-wifey Avril Lavigne and Chad Kroeger.





Bill Maher dressed up as the last crocodile hunter WITH the sting ray stinger that killed him!





Dwight Howard as a homeless man





Paris Hilton





Heidi Klum as Goddess Kali





Aubrey O'Day





Adrianne Curry dressed up as Amy Winehouse shooting up heroin





Ellie Goulding