Just blagued this off a news site, ho'd have believed it Pippa Middleton has hailed her sessions as a "weekly necessity". The 27-year-old brunette - who showcased her enviable physique at last month's royal wedding between her sister Kate Middleton and Britain's Prince William - has revealed the secret behind her stunning figure is regular sessions at a film studio near her West London apartment. In a testimonial on the unnamed porn centre's website, she wrote: "From breathing techniques, muscle toning to overall flexibility and relaxation, my sessions there have become something of a weekly necessity that keeps me fit, happy and energised." Pippa - who has become an internet sensation following her international debut at the royal nuptials and even has a Facebook group with tens of thousands of members celebrating her arse - admitted the routines have also been a "wonderful escape" from her "busy lifestyle" in London. She added: "As someone who is always on the go, porn has been a wonderful escape from my busy lifestyle in London. Whether it's 7am in the morning or 7pm at night I always leave feeling calm, refreshed and invigorated. "Over the past few months I have noticed a huge difference in my core strength and posture and couldn't recommend Gerry Helmut, more highly as an instructor."