It's well known that Pippa Middleton's much admired figure is partly the product of a strict pilates regime.
The socialite is often seen popping in and out of the Pilates on the Go studio in west London.
And now her teacher, Margot Campbell, has landed a deal with the Hodder Publishing house for a step-by-step pilates guide.
Hodder's lifestyle publisher, Nicky Ross said: "'Margot's unique approach, which combines pilates with aerobic exercise and healthy eating tips, is a complete programme that's easy to incorporate into your daily routine."
Pippa wrote on the studio's website: “From breathing techniques, muscle toning to overall flexibility and relaxation, my Pilates sessions have become a weekly necessity that keeps me fit, happy and energized...
"Over the past few months I have noticed a huge difference in my core strength and posture.
"I couldn’t recommend Margot more highly as an instructor.”
The book is expected to hit the shelves by January 2012.
Photo: ©, Rex