Celebrity What Will She Wear? Heidi Klum Teases Another Spectacular Halloween Costume: 'So Yucky but so Worth It' She's previously dressed up as a butterfly, a cadaver and an old lady, among others By Adam Carlson Published on October 3, 2015 10:50 AM Share Tweet Pin Email Photo: Courtesy Heidi Klum Heidi Klum, unofficial patron saint of incredible and spectacularly detailed Halloween costumes, is at it again! “Slime me up,” Klum, 42, wrote in a Friday Instagram video of her costume prep – her body being smeared by a shiny blue substance while hearing something long and skinny on her head. “So yucky but so worth it in the end,” she captioned another Instagram photo, this time of her entire face covered with the substance, except her eyes. It appeared that she was having a mold made of her body, but it’s hard to tell just going off the photos alone. But eager fans wondering, “What will she be?” got nothing more than a few hints, including a photo of her in the early stages of preparation with the team at Prosthetic Renaissance. “It’s almost time for my favorite holiday!” she wrote in that caption. Klum’s costume history is no help, either: She has gone as everything from an old lady (including wrinkled neck, liver spots and cane) to a cadaver to a giant butterfly. She sports her elaborate costumes to her annual star-studded Halloween party. Heidi Klum: Her Changing Looks! “I like to surprise my guests and to encourage them to go all out, as well,” she said in 2013.