Fashion supermodel Heidi Klum, 53, and her daughter Leni Klum spent the day sunbathing in St. Barts on Wednesday, July 29. In photos shared on Instagram by Splash News, Heidi and her daughter both showed off their fit figures in teeny string bikinis. Heidi Klum and Daughter Leni Rock Strong Bikinis in St. BartsWhile Heidi has four children, including Leni, 22; Henry, 20; Johan, 19; and Lou, 16, the acclaimed fashion model’s eldest daughter chose to follow in her mom’s career footsteps, hoping to make an imprint of her own. Heidi Klum’s Ex-Husband Seal Adopts Daughter LeniHeidi and Leni’s biological dad split in late 2003 when she was pregnant with Leni. “They have both taught me to be myself and to do what makes me feel comfortable,” Leni shared.