Washington, Apr 16 : Supermodel Heidi Klum is expecting her third child with music-man hubby Seal, sources have confirmed.

The star pair has two sons together, Henry Günther Ademola Dashtu Samuel, 3, and Johan Riley Fyodor Taiwo Samuel, 2, reports E! Online.

Seal is also the adoptive father of Klum''s daughter, Helene "Leni" Klum, whom she had with Italian businessman Flavio Briatore.

Sources claim that the 35-year-old stunner is a little less than four-months pregnant.

The pregnancy buzz was started when sketches of her in a couture gown redesigned for her growing belly had somehow posted on the Internet. (ANI)