It's a celebrity costume face-off!
Both Kim Kardashian and Julianne Hough dressed up as Batman villain Poison Ivy. We want to know, looked better?
While Kim's costume was a little more faithful to Uma Thurman's look from "Batman and Robin," complete with fiery red wig and leaf mask, we love Julianne's sexy take on Ivy as well. One thing's for sure -- neither starlet needed pheremones to turn heads in these costumes.
Vote for your choice below!