Heidi Klum Says Her Kids ‘Have Their Own Ideas’ for Halloween Costumes: ‘Lou Makes Her Own Things’ (Exclusive)

Klum shares kids Leni, 20, Henry, 19, Johan, 17, and Lou, 15, with her ex-husband Seal

Heidi Klum is the queen of Halloween, and one of her kids seems to be following in her footsteps.

Speaking exclusively to PEOPLE at the opening of CRAZY PIZZA in New York City on Tuesday, Oct. 29, the supermodel, 51, shared that her four kids —  Leni, 20, Henry, 19, Johan, 17, and Lou, 15, who she shares with her ex-husband Seal — come up with their Halloween costumes by themselves.

"They have their own ideas," she tells PEOPLE, adding that her younger daughter Lou gets especially into the costume-making occasion.

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Related: Heidi Klum's 4 Kids: All About Leni, Henry, Johan and Lou

"I mean, Lou, especially. She makes her own things," Klum says. "She's also really into anime. She makes all the wigs herself, like all the pink ones... so she does that all by herself."

The proud mom even admits, "She's pretty talented, I have to say, more talented than me when it comes to building things."

"She buys all the accessories and then she puts a little mask on, like a real proper one," she shares of Lou's impressive costume construction skills. "She [wears the mask] when she's like sanding things down and she's building things so that she doesn't inhale all the dust. She does it properly."

"If anyone has the major block about dressing up and that stuff, it would be my Lou," Klum adds.

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The mom of four also revealed to PEOPLE at the event that she gets “anxious” before revealing her elaborate costumes.

“I always get anxious,” Klum admits. “Because there is no real trial. like, I can't do a real fitting before I am in it. Because I never know if it works until the day [of]. And then you know, and then something happens and I'm like, ‘Oh god.' ”

Speaking about a previous mishap with her costume, the America's Got Talent judge shares, “When I was an apple, and Seal was Eve.”

“And because I was nine months pregnant, and I wanted to make sure nothing can hurt the baby or something,” she continues. “So I was thinking about being this big apple, but then we forgot how am I gonna get to the party?”