Heidi Klum reveals she called her daughter 'every two hours' after the 18-year-old moved away for college

• Heidi Klum said that she called her daughter Leni "every two hours" the weekend she moved into college.
• Klum said that her daughter not picking up the phone or calling her back made her worry.

Heidi Klum said that the first weekend after her daughter Leni moved away to college, she called "every two hours" until Leni picked up.

Eighteen-year-old Leni recently moved to New York City to begin college, Klum said on Monday's episode of "The Late Late Show with James Corden." Klum said that the new distance was worry-inducing — especially when Leni doesn't pick up the phone.

"Today she had her first day in college," Klum told Corden. "This weekend she just moved in and I called, and normally she picks up, and then three, four hours I don't hear anything. And I'm already like, my head is going, 'Where is she, what is she doing, why is she not answering.' Already the worrying is starting."

"I had called this weekend like, every two hours I called again, and I'm like, 'Why don't you just call me back?'" Klum continued. "Now I want the number of the roommate so that I can bug the roommate if she doesn't pick up."

Despite the worry, Klum told Entertainment Tonight earlier in August that she was proud of her daughter, who she said "has her head screwed on right." Furthermore, she said, Leni was familiar with New York City, given that Klum moved the family there every time she was filming "Project Runway." According to Klum, her daughter, who has already started her own modeling career, was prioritizing college over work.

"I think she's going to have a good time, but my heart will be sad," she told Entertainment Tonight.

Klum shares Leni, whose biological father is the Italian businessman Flavio Briatore, and her other three children — Henry, 16, Johan, 15, and Lou, 12 — with her ex Seal. Klum is currently married to guitarist Tom Kaulitz of Tokio Hotel.