Heidi Klum Pregnant with Fourth Child

Heidi Klum is pregnant with her fourth child, husband Seal announced.Sharing the happy news at his New York concert Thursday, the singer told fans: "[The] topic of debate outside our hotel is, 'Is Heidi having another baby?' Heidi and I are having another baby!"The bundle of joy is due in the fall and will join sister Leni, 4, and brothers Henry, 3, and Johan, 2. Leni is Klum's daughter with Italian businessman Flavio Briatore.Klum and the children were in the front row at the Radio City Music Hall show when Seal announced the news, Us Weekly reports.Klum's pregnancy comes on the heels of Project Runway's lawsuit settlement, which frees the show to air on Lifetime this summer. A casting call for Season 7 is also out. What's a season of Runway without Klum pregnant?