Check out before and after photos of Kate Middleton, Kim Kardashian, Halle Berry and other stars' hottest post-baby bodies
The petite Jersey Shore star slimmed down in record time after giving birth to son Lorenzo in August 2012. Taking special care to stay in shape while pregnant -- opting to focus on back-strengthening moves and cardio -- Jionni LaValle's fiancee chose to breastfeed her son, which can burn up to 500 calories a day. "I love nursing my little man!" enthused the reality star.
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