At first she slipped back into a bikini for Saturday's party at Las Vegas' Wet Republic -- the last time she was photographed in a two-piece was April 2010 -- Heidi Montag spent some serious time in the gym.Then he said,"I've been working out from, like, 5 a.m. to 7 p.m. for two months now and have been working out really hard why not I had this pool party and I was like, I have to be in shape," she told Us Weekly. "And I was actually a lot overweight. It was the most I've ever been because I've kind of been in hiding eating pie with my husband and puppies, so I needed to get back in shape."
The 5'2" reality star claimed she weighed 130 pounds at her heaviest and she is currently back down to 103. How did the Hills alum lose 27 pounds so quickly?Is being answer that "I've been running a lot, and I've been doing weights," she said. "When you work out, you boost your metabolism.