It appears Heidi Klum, 45, and her fiancé Tom Kaulitz, 29, are expecting their first child.
Fashion designer Wolfgang Joop was chatting to TV channel RTL when he seemingly let slip the news.
Neither Heidi nor Tom have confirmed that they are expecting a baby but they have also not denied the rumours.
Heidi and Tom, both Germans, announced their engagement in December last year.
Heidi has four other children – Leni, 14; Henry, 12; Johan, 11; and Lou, 8.
Speaking to Entertainment Tonight, Heidi recently said that she is tired of the public and the media focusing on the 17 year age gap between herself and Tom saying.
I don’t really think about getting older that much – I mean, I know it’s happening to me, it’s happening to all of us. But it’s not like I wake up in the morning, look in the mirror, and say, ‘Oh my God, oh my God.’ Lately, I’m being reminded more about my age by people other than myself.
My boyfriend is many years younger than me, and lots of people are questioning that and asking about it. That’s really the only time when age seems to be shoved in my face and I have to give an answer for it. I don’t really think about it that much otherwise. You have to just live a happy life without worrying too much about what people think because worrying is only going to give you more wrinkles.