Sharon Osbourne encourages celebrities to admit to plastic surgery

Former X Factor judge Sharon Osbourne has criticised celebrities for not admitting to cosmetic surgery.

Sharon, who is a well-known fan of cosmetic surgery, insinuated that Botox injections were the reason behind Nicole Kidman's forehead - which she likened to a "flat screen TV" - even though the Australian actress has always denied undergoing any aesthetic surgical procedures.

Speaking on US chat show Chelsea Lately, Sharon said: "If something bothers you, it doesn't make you happy, then change it. What's the deal? I don't get what the mystique is, why people lie about [having cosmetic surgery]."

In the past, Sharon, who now sits on the judging panel of America's Got Talent, has admitted to spending over 300,000 on cosmetic surgery treatments, including liposuction, a breast augmentation, a facelift and a tummy tuck.

She is not the only X Factor judge to have received cosmetic surgery, however. Dannii Minogue is known to receive regular wrinkle relaxing injections and has previously undergone a breast enlargement to enhance her chest.

Simon Cowell has also admitted to having Botox injections to smooth over his facial wrinkles.

Sharon is one of an emerging group of ageing celebrities who are keen to talk about their cosmetic surgery experiences. Last week, former 1980s punk star Toyah Wilcox pledged her support for women keen to undergo cosmetic surgery.

She told The Sun that she wrote her book, Diary of a Facelift, because "no one would give me good advice and I didn't want other women to end up in the hands of a cowboy."