Secret of Pippa's sexy bum

Pippa Middleton has finally revealed the secret to her toned derriere and elongated frame. The 27-year-old has credited her weekly pilates classes for her great shape.

Pippa Middleton has finally revealed the secret to her toned derriere and elongated frame. The 27-year-old has credited her weekly pilates classes for her great shape. Ever since Pippa walked down the aisle, holding sister

HT Image

Kate’s

train, the whole world has been fixated on her fabulous figure. It was reported that UK women are now flocking clinics to go under knife to obtain Pippa’s famous bum. The

brunette

claims that exercise has helped improve her core stability and posture - which explains her elongated frame and natural poise on the big day, reports the

Daily Mail

.

She attends these classes at a small studio in Parson's Green near her London apartment. Pippa even hailed the studio a 'weekly necessity'. In a testimonial on the fitness centre's website, Pippa wrote: 'As someone who is always ‘on the go’, Pilates 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', she added. 'From breathing techniques, muscle toning to overall flexibility and relaxation, my

Pilates sessions have become something of a weekly necessity that keeps me fit, happy and energized', she said.