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Beyonce

Beyonce showed off her rocking post-baby body at Michelle Obama's fundraiser for the president's re-election campaign on Monday night in NYC. Just 10 weeks after giving birth to baby Blue Ivy, the "Irreplaceable" singer, 30, donned a navy curve-hugging, sophisticated dress by designer Victoria Beckham. Of course, it sounds like she had a little help! According to Star magazine, trainer Marco Borges lived with her for two-a-day workouts at 5 a.m. and 5 p.m. B has also been "living on protein shakes, egg-white omelets, pineapple chunks, and lots of ice-cold water" to "have a better body than ever." (3/19/2012)

Beyonce Flaunts Post-Baby Body

Blue Ivy's mom is the latest celeb to shed her pregnancy weight in no time. Check out pics of Jessica Alba, Kate Hudson, and Keri Russell before and after baby.