Prue Leith has recalled the time she stripped off after inadvertently attending an orgy in Paris.

The Great British Bake Off judge told of how she was “so embarrassed” by what she saw, but got naked to blend in and spent the evening making excuses so she did not have to join in.

Prue regaled Jonathan Ross with the tale on the upcoming episode of his ITV chat show, which is set to air on Saturday.

She said: “I did go to an orgy in Paris, but I have to claim I didn’t know I was going to go to an orgy.

“I thought I was going to a party. Went with a very nice guy, so thought that would be great.

“All I can say is room after room of bouncing bottoms everywhere… on the floor, in all the rooms. I was so embarrassed.”

Prue continued: “Anyhow, this guy, he thought it was fantastic. So he just vanished.

“So there I am, 19 or something. So I went to the bar and somebody immediately said to me, ‘Why have you got your clothes on?’ I said, ‘I’m just going to change’.

“I’d walk away. Someone else saying, ‘Why have you got clothes on?’

“So I realised the only way to be invisible was to take my clothes off.

“So I took my clothes off and walked around this party. Spent the next hour saying I was going to the bar, the loo, looking for a friend. I missed the orgy, although I was there!”

She added: “I’ve lived a long time, doesn’t seem worth not enjoying it.”

The Jonathan Ross Show airs on Saturday at 9.35pm on ITV.