Amanda Holden has revealed that she watched X Factor's Tulisa Contostavlos' infamous sex tape after fellow Britain's Got Talent judge Alesha Dixon sent her the link.

The 41-year-old blonde made the candid admission on Alan Carr's chat show, in which she appears with fellow judge David Walliams.

She said that, like everyone else, she was curious when the explicit tape first emerged online.

Contostavlos, who was crowned FHM's sexiest woman in the world this week, made headlines in March after footage of her performing a sex act on former boyfriend Justin Edwards appeared on the internet.

Speaking to the Chatty Man host, Holden said: "It's a terrible thing to confess but everyone wants to see it. It was her."

The mother-of-two was less than supportive when Carr suggested that Tulisa could have been superimposed on a screen.

In a catty snipe to the 23-year-old former N-Dubz singer, she retorted: "I've had a green screen where I've had to fall off the end of a cliff - but never one with a c**k."

Holden's confession came just days after an emotional Contostavlos appeared on the show and tearfully admitted that the scandal had been a nightmare.

Contostavlos told Carr that she assumed her job on the X Factor panel would be at risk and her reputation damaged forever when the explicit tape went viral.

"I'm thinking, 'Oh God, my career could be over - the whole UK thinks I'm a slapper.'

"I have been surprised by how nice everyone has been."

Alan Carr's Chatty Man airs tonight on Channel 4 at 10pm.