Christie's top tips to get Pippa's shape
Lie on the mat, lengthen the spine and raise legs into a bent leg position. Imprint the spine (it should feel like your back is melting into the mat), lift head, neck and shoulders, and imagine springs underneath your arms as you pump them 100 times, breathing in for five and out for five.
Lie on your side with your legs stacked and pull your stomach into your spine. Lift the top leg and kick front and back keeping the rest of your body still.
The Plank -- This is a great one for toning the whole body. Push up on your front creating a straight line from your head to your heels keeping the tummy tight.
Standing and using an elastic strap and keeping shoulders relaxed work the biceps and triceps by pulling and releasing. Keep the stomach tight.
Get on all fours on the mat. Extend one leg behind, lifting at hip height, keep the foot flexed and rotate to the side and repeat.