Holly Willoughby tested a 'vagina-tightening' machine on 'Christmas Shopping with Keith Lemon'.

Holly Willoughby

Holly Willoughby

The 38-year-old presenter appeared on the festive edition of her 'Celebrity Juice' co-star's outrageous talk show, and she tried out the x-rated beauty treatment.

Explaining what the chair is intended for, Holly told Keith: "It helps make your vagina strong again.

"Women of a certain age or after you have a baby. Those muscles get kind of looser."

Although the 'This Morning' host initially seemed keen to test out the so-called 'kegel throne' - the equivalent of 11,000 kegel exercises - she quickly moved when the experience became too much.

She added: "I can feel tingling, like pins and needles in your butt cheeks...

"Stop it, stop it, make it stop! It feels really weird, I don't like it! What was that?

"It felt like something was pulling down. It felt like something was [in me] pulling down!"

During the 'Christmas Shopping' special, Holly also told Keith - the comic creation of Leigh Francis - about how she thought her husband Dan Baldwin was a "d***head" when they first met when he joined one of her projects as a producer.

She said: "Dan was there as a new producer and I thought, 'oh my God, I'm gonna hate this guy'...

"[I didn't fancy him] at all and he'd come from MTV and he was very cool for school. He looked at me like I was this wally of a person.

"I thought, 'Oh my God he hates me, he just thinks he's really cool.' "

When Keith prompted that she thought "he's a d***head", Holly admitted she did "a little bit", before admitting they did get along and become "really good friends".

She explained: "We became really good friends. We were in the bar and we cheers-ed in regards to champagne and I looked at him and it was like, 'Oh my God, I fancy him'.

"In that second I just knew, it was like a little sparkle."