The stars did their best overnight to get into the spooky spirit. Kim Kardashian hit up the Midori Green party in New York in an eye-popping Halloween Poison Ivy costume. She donned a green strapless dress that was covered in fake ivy leaves which matched her eye mask. To finish off her Batman-inspired look she also wore a long red wig, and gold sparkly shoes and nude tights. It was a more sexed-up version of Poison Ivy which was played by Uma Thurman in the 1997 film Batman & Robin.