Seal has confirmed rumours that he and wife Heidi Klum are expecting their third child together.

The pregnancy gossip started this week after pictures purporting to be of the German beauty's designer maternity wear were leaked online.

She was also snapped sporting a sizeable bump over the Easter break.

After keeping mum for a few days, Seal was no longer able to contain his delight at the prospect of becoming a father again and announced the happy news to fans while on-stage at Radio City Music Hall in New York.

He told the audience: "(The) topic of debate outside our hotel is, 'Is Heidi having another baby?'

"Heidi and I are having another baby! I mean, Heidi is doing all the work."

And mum-to-be Heidi joined in on the celebration by cheering on her husband from the sixth row, where she sat with her kids Leni, Henry Gunter and Johan Riley.

The latest edition will be Heidi's fourth child.