Seal and Heidi Klum expecting first child

British rocker Seal and his German supermodel fiancee Heidi Klum are expecting their first child together, according to reports.

Klum - who only gave birth to her first child, daughter Leni, with former lover Flavio Briatore 11 months ago - is due to give birth in September.

A friend of the couple, who got engaged in Canada in December, tells Los Angeles radio station Kiss FM: "They are very, very happy."