The Best Celebrity Halloween Costumes

Famous people like Katy Perry, Kathie Lee and Kim Kardashian have more incentive than the rest of us to have great Halloween costumes because their get-ups are going to be photographed and dissected by millions. Here are some of the best photos of celebrities in costumes from this weekend's celebrations. Let us know what you think.

Katy Perry

Kathie Lee Gifford and Hoda Kotb as Princesses Beatrice and Eugenie

Morgan Fairchild

Matt Lauer and Ann Curry as Prince William and Kate Middleton

Anderson Cooper as Phil Donahue

Kim Kardashian as Poison Ivy from 'Batman' and Jonathan Cheban as Robin

Teresa Guidice as herself... Horrifying!