The supermodel mom stars in a hilariously cute new show, Seriously Funny Kids, on Lifetime

Credit: Justin Stephens/Lifetime

Tricks are for kids! Just ask Heidi Klum, who will be toying with children’s minds on her new unscripted Lifetime series Seriously Funny Kids.

But it’s all in good fun, says the supermodel mommy, 37, who told reporters, “I do pranks with them. I get to know so many kids and their personalities, but my favorite is always the hidden camera bits. It’s hard for me because I can’t crack up. I have to stay in that moment, and sometimes it gets serious.”

Klum recalls a moment from the show – which premieres with two back-to-back episodes Feb. 1 – that stands out in her mind as particularly memorable.

“There was a little girl, and she was so into fashion and she had seen me on Project Runway,” Klum says. “And I said, ‘You know, I’ve been world’s best-dressed woman for 10 years. I’m so excited. Look at me. I have so much style and class.’ I was really hamming it up.”

But the joke was on the little girl once Klum said she needed to step away for a moment.

“As I walked away, my phone rings,” Klum says. “The girl picks up the phone, and … it was some journalist who called and said, ‘By the way, we’re putting Heidi on the cover of the worst-dressed person in the world, and you have to break it to her.’ ”

The fake phone call left the little girl devastated.

“She was so cute and she was so on my side,” Klum says. “Then I came back and she had a breakdown … and I couldn t crack up because then she would have known it was a hidden camera bit.”

Adds the mom of four, summing up the gist of the whole show, “It’s so funny when these moments happen and [the kids] don’t know they’re being filmed. We do a lot of those, and I love those because they’re just so honest.”