Run, Pippa, run!
Pippa Middleton didn't so much sweat as glisten at a triathlon in Woodstock, England on Saturday.
Clad in a tank top, running shorts and sneakers, Princess Kate's little sister, 27, was radiant and strong as she ran among other competitors — colliding with one handsome, topless mystery man! — for Saturday's GE Blenheim Triathlon at Blenheim Palace. See more photos of Pippa running.
Kate, 29, meanwhile, was in more formal attire at Derby Day in Epsom, England — regal in a cream-colored short skirt, high-heeled shoes and a light-brown hat as she joined a natty-looking Prince William, Prince Harry, Queen Elizabeth and other royals for a big horse race.
Even before her in-shape physique (including a talked-about derriere) made headlines worldwide at the royal wedding April 29, Pippa has long endeavored to stay healthy, active and in shape — thanks to weekly pilates sessions plus swimming, tennis, skiing and, obviously, jogging.
Although "best friends," the Middleton sisters have always had a "healthy competition," royal watcher Katie Nicholl recently told Us Weekly. "Certainly when it comes to looks, like who is the slimmest or better looking, there is a little friendly rivalry," Nicholl said.
The siblings squabble over "weird things," one source added. "You'd see them fight over who had the worst headache or period pain!"
For access to all our exclusive celebrity videos and interviews – Subscribe on YouTube!