When it comes to Halloween, Heidi Klum is always in.

While her 2017 costume will remain a surprise until the party itself, Klum gave EW a little tease.

This time its going to be scary, she says.

Heidi Klum’s 3rd Annual Halloween Bash

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Im going to wear a lot of prosthetics.

I dont like to do just easy costumes obviously.

She also reveals that there is an Easter egg hint hidden withinthe Spotify Halloween playlistshe shared on Friday.

Heidi Klum’s 9th Annual Halloween Party - Arrivals

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Some of her costumes have taken up to 10 hours in the makeup chair.

Halloween is so much fun because you get to be someone else, theProject Runwayhost explains.

That is also her goal when it comes to deciding what to be each year.

Heidi Klum’s 12th Annual Halloween Party at TAO Las Vegas at the Venetian

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I have to do something really cool and different, she says.

I want to surprise people.

I want to be creative.

Shutterfly Presents Heidi Klum’s 14th Annual Halloween Party At Marquee New York Sponsored By SVEDKA Vodka And smartwater

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I also like to be unrecognizable.

Its kind of like writing a book, she says.

Whats more, there is no dress rehearsal, Klum points out.

Moto X Presents Heidi Klum’s 15th Annual Halloween Party Sponsored By SVEDKA Vodka At TAO Downtown - Arrivals

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I cannot try it on until the day and we always hope it works out.

Betty Boop (2002)

Shes like an icon, Klum says of the cartoon character.

Everyone knows who she is; shes really recognizable.

Heidi Klum’s 16th Annual Halloween Party sponsored by GSN’s Hellevator And SVEDKA Vodka At LAVO New York - Arrivals

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I bought this weird putty you put on your [eyebrows] to smooth all your hair down.

I just thought it was so amazing to be this strong, powerful woman with all those arms.

For that, she turned to an unlikely place for inspiration: the Victorias Secret Fashion show.

Heidi Klum’s 17th Annual Halloween Party sponsored by SVEDKA Vodka at Vandal New York - Inside

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She turned to a Broadway fashion designer who had also built many angel wings for Victorias Secret.

I had all the arms attached, she explains.

So my hair on my chest down to the right length to hide the backpack part of it…. Its scary to see what your body looks like when your first layer has been peeled off.

I put these yellow teeth in.

Klum also found a vintage Chanel suit online and had a special wig made for the costume.

Still, she cites this as her favorite costume in the course of 18 years.

It was kind of like looking in the mirror.

Still, it was important to her that she stick to the insect feel of the costume.

To me she is the ultimate fantasy for a man, right?

If you really zoom in, you could see my eyes look cartoony.

You know how a cartoon or a doll has a different kind of iris?, she says.

I still have to blink behind that.

Then there was the prosthetics required to mimic the characters voluptuous shape.

The boobs were gigantic and they were really heavy and they were full-on glued to my chest.

Same with the butt I mean nothing was moving.

When I was sitting on that butt, that butt was my butt, says Klum.

I had a wig maker make wigs for the five girls so they would look exactly the same.

It was very difficult to put my face onto these five girls faces.

It was tricky to find five ladies that were willing to do that with me, she says.