London, Aug 20 (IANS): Former Girls Aloud star Sarah Harding says she hasn't gone under the knife, but her appearance on a chat show caused a stir among fans who raised questions about her looks.

According to some fans, Harding was 'unrecognisable' during the TV interview on "This Morning", where she discussed Ghost the musical, reports mirror.co.uk.

Denying rumours that she had had plastic surgery, after one of the hosts asked her about growing old gracefully in the showbiz industry, Harding pointed out that she hadn't had Botox injections in her forehead.

"I haven't had plastic surgery. Can I say hello?"

But when the host wanted to know what the 34-year-old singer thought about other women altering their looks: "As a woman getting older people start to feel insecure about the way they look... You should embrace it women."

Some viewers to Twitter with their own doubts about Harding despite her denials.

"Talking about 'embracing it' when you've clearly done shit loads to your face. LOL # thismorning," wrote one user, while another asked: "Wtf has happened to Sarah Harding. She looks so different."