Celebs love playing dress up on Halloween, because it is the one night of the year that they can wear something completely outrageous and avoid landing on the Worst Dressed list -- until now! 

RadarOnline.com has compiled photos of the best, worst and wackiest celebrity Halloween costumes of all times, in this fab -- and frightening -- fashion feature.

PHOTOS: Stars In The Best, Worst & Wackiest Halloween Costumes

Heidi Klum is clearly the queen of Halloween.

The sexy supermodel hosts an annual star-studded costume party, where she always dominates with her intricate and creative costumes. 

What's one of her wackiest looks of all times?