Rob Kardashian -- I'm Not a Big Loser ... Yet

Kim isn't the only Kardashian with a protruding belly.

Rob Kardashian has been pretty open about his weight struggles and continued on his quest to drop the extra pounds by rockin' some slimming black workout gear during a vigorous hike in Culver City on Wednesday.

In between trying to slim down, Rob is in the midst of a legal battle and recently pled not guilty to allegedly attacking a photographer and stealing her equipment for trying to take a shirtless photo of him.