I think Kim Kardasian is a Poison Ivy fan
One time on an image search, I randomly came across an image of her at a Hollywood Halloween party and she was wearing a costume I instantly recognized as being inspired by Poison Ivy from this movie. Take a look: https://www.hawtcelebs.com/wp-content/uploads/2011/10/Kim-Kardashian-as-Poison-Ivy-for-Halloween-22.jpg
It's not accurate to what Ivy wore to crash the charity auction, but you can definitely tell Kim took inspiration from it when she had her costume made.
Fun fact: when you're dressing for Halloween in Hollywood and have a lot of money, you can get some really good costumes made for the holiday event.