The popularity of yoga has boosted demand for “designer vaginas” — as women want to feel good in tight leggings, a cosmetic surgeon claims.

Dr. Paul Banwell said Britain’s recent fitness boom has fueled a rise in women wanting the procedure, known as vaginoplasty.

The hour-long surgery aims to reinvigorate the vagina and bolster sexual function.

Studies show demand for “designer vaginas” has risen five-fold in the UK since the late ’90s — even though most women do not need the surgery.

Pornographic images of women on the internet and in TV shows about cosmetic surgery were thought to have fueled the increase.

But Banwell, who runs a private clinic in West London, says personal appearance during fitness sessions is now proving an even bigger incentive for many women.

The consultant cosmetic surgeon said: “A few years ago, everyone was talking about the so-called impact of the porn industry.

“Personally, I’d say I don’t see that in my patients. They are concerned about functional things.

“The boom in physical exercise in the past 10 years has driven it.

“I think porn is an influence, but that influence is very small. What is driving things is yoga, sport, exercise and outdoor living.”