New York, Mar 13 : Singer Kelly Clarkson, who returned to the `American Idol' stage to belt out her latest single `My Life Would Suck Without You', sparked pregnancy rumours after she was spotted looking more curvilinear than her usual self.

The original American idol winner confidently took to the stage clothed in a form-fitting black mini-dress, knee-high black boots, tights and a shimmery sequined shrug, but she raised eyebrows with her rounded body.

However, she immediately shot down the rumours, saying that she was not pregnant.

"She is not pregnant," the New York Daily News quoted a representative for Kelly as saying.

When asked by host Ryan Seacrest whether her new song was written with a special someone in mind, she replied that she was not in a relationship at the moment. (ANI)