It's just five months since Natalie Portman gave birth and already the Black Swan star's perfect petite figure is back, and RadarOnline.com has the latest photos of how she blasts off the pregnancy pounds.

Portman and fiance Benjamin Millepied welcomed son Aleph last June, and the proud parents and exercise buddies were spotted enjoying an early morning run together in the Los Feliz area of Los Angeles on Monday.

During her pregnancy, vegetarian Portman said she was happy to spend it lying back in bed and eating popcorn, but since she became a mom for the first time, the 30-year-old has been dedicated to slimming down.

Princess Kate's smoking hot sister Pippa Middleton was out and about in London on Friday, showing off her bombshell booty in tight spandex shortsduring her morning jog before changing into a perfect polka dot dress - and RadarOnline.com has the photos.

Her Royal Hotness, who is devoted to keeping her body in tip-top shape, left little to the imagination, flaunting her figure in skintight spandex running shorts, which she paired with a Nike shirt and her BVLGARI shades.

PHOTOS: Pippa Middleton Looks Stylish In London