(Cover) - EN Showbiz - Beyonc Knowles has had to deny claims that her pregnancy is fake.

Images of the 30-year-old singer on Australian talk show, Sunday Night, spread like wildfire yesterday as some conspiracy theorists suggested her baby bump looked like it was not real.

Beyonc walked on to the set of the show wearing a fitted pink dress with her pregnancy belly on full display.

But as she sat down it looked to some like her stomach deflated as if she was wearing a prosthetic.

The singer's representative has hit back at the claims and told ABC the rumours the singer was wearing a fake bump were "stupid, ridiculous and false".

Beyonc announced she was expecting her first child with rapper husband Jay-Z in August at the MTV Awards where she opened up her jacket and rubbed her visible belly.

However, weeks later at the opening of the Tory Burch Madison Avenue flagship store in New York, she was seen wearing a cutout dress and no baby bump was as visible.

But the Single Ladies singer was also seen wearing a white bikini on vacation in Croatia last month where her bare pregnant belly was on full display. (C) Cover Media