Heidi Klum on baby #4.

Klum,35, and Seal, 46, are on the cover of Us Weekly announcing that they are expecting baby #4. The baby will arrive in the fall to sister Leni, 5, and brothers Henry, 3, and Johan, 2. She says that they have always been open to a big family. "When Johan was born, I still didn't feel like I was done," Klum said. "When we looked around the table, it was like one person was missing..."

Go, Heidi! Go, Heidi! Go go go, Heidi!