Athletic Pippa drawcard at triathlon

Pippa Middleton crosses the finish line. Photo / Getty Images

Pippa Middleton set pulses racing - as well as her own - as she sweated her way to triathlon triumph.

And she even used the world's most famous posterior - bumping out a competitor before crossing the finish line during the 5km run in Woodstock, England, at the weekend.

Ms Middleton, sister of the newlywed Duchess of Cambridge, was the star attraction in a pink and grey singlet, matching shorts ... and Bulgari sunglasses.

The 27-year-old breezed through her race, completing it in 25 minutes and 30 seconds.

Meanwhile, Prince William and wife Kate enjoyed a day at the races at Epsom's Derby Day.