The model teases her creepy costume, which she'll wear to her Las Vegas bash this weekend

By Kate Hogan
October 26, 2011 02:00 PM

Courtesy Heidi Klum

Heidi Klum is letting us look deep into her soul with her 2011 Halloween costume, an anatomically-correct — and potentially creepy — bodysuit.

The outfit, called “Visible Woman,” was hand-painted by designer Martin Izquierdo and is what Klum will wear this weekend when she hosts a Halloween party at TAO Nightclub at the Venetian in Las Vegas. She’ll also sport custom prosthetic teeth created by her dentist, Dr. Gregg Lituchy. (The
Project Runway
host will celebrate again Monday during a HobNob Wines-sponsored bash at PH-D Rooftop Lounge in New York’s Dream Downtown hotel.)

“It’s kind of like a dead body with the first layer of skin ripped off,” she tells PEOPLE of her costume. “It’s basically like me naked.” In fact, every vein and muscle was painted on to replicate her own body structure. “All my veins and blood will all be visible,” she says with a laugh. “You don’t feel quite naked with it because it is so colorful.” As for her husband Seal, she says, “He liked it!”

Klum, this year’s UNICEF Trick-or-Treat Ambassador, admits that Halloween is her favorite holiday, and it shows: In the past several years, the party hostess has dressed up as an apple from the Garden of Eden, Lady Godiva and, in 2010, a larger-than-life superhero. So she suggests going all out when creating your own disguise.

“The amazing thing about creating your own costume,” she explains, “is that you can be sure no one else has the same.” Some of her favorites? “One guy came as a mattress one year,” she says of a past party. “It was annoying but it was an awesome costume.”

But beware: Creativity is key for getting into a Klum-hosted Halloween bash. “I always put on my invitation, ‘Costume required,’ because if you’re not dressing up, you’re not getting in,” she warns.

One year, she recalls, Prince Andrew showed up — but she thought it was someone dressed as the royal. “I said to him, ‘Who are you coming as, Prince Andrew?'” recalls Klum. “He wasn’t dressed up at all and I was like, ‘How did they let you in?'” At first he looked a bit perplexed until she realized he was the real thing. Then, she says, “I had bright red lips so I smooched his face and he had kisses all over.” Tell us: What are you wearing for Halloween this year?

–With reporting by Liz McNeil