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Kate Hudson didn't waste any time getting her post-baby body in bikini-ready shape!

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The 32-year-old, who gave birth to son Bingham on July 9, showed off her sexy abs in a printed bikini while vacationing in Cabo San Lucas, Mexico, Sunday. The "Something Borrowed" actress was joined by her fiance, Muse frontman Matt Bellamy, 33.

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How did Hudson snap back into shape so quickly? "Kate built a dance studio in her house," a pal told Us Weekly in January. "She uses it an hour every day."

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The famous blonde -- who packed on 70 pounds with her first son, Ryder, now 8 -- also said no to fatty fare during her second pregnancy. "I like healthy foods," Hudson explained, choosing berries over bacon.

Tell Us: Are you envious of Kate Hudson's post-baby body?