Popsugar Fitness Celebrity Fitness Celebrities Working Out in Hollywood Award Season Might Be Over, but That Didn't Keep These Celebs From the Gym! March 7, 2014 by Michele Foley View On One Page Photo 6 of 6 ADVERTISEMENT () Start Slideshow Share This Link Copy ← Use Arrow Keys → 6 Diane Kruger What's Diane Kruger's secret to staying in shape? Going to Pilates class and staying hydrated with a giant bottle of water. Previous Next Start Slideshow Ashley GreeneDiane KrugerHilary DuffAlessandra AmbrosioMinka KellyCelebrity Fitness