Kourtney Kardashia, Scott Disick, Mason

Brian Prahl / Splash News

Kourtney Kardashian is one hot mama!

And Scott Disick's not too bad, either. On Sunday, the fit twosome hit the beach in Mexico with their son, Mason.

Kourtney, 33, showed off her bikini body in a two-piece. The E! star gave birth to daughter Penelope just eight months ago, but it certainly looks like she's got her prebaby figure back!

So how'd she do it? It wasn't anything too krazy!

Earlier this year, Kourt told Us Weekly that while it was harder to lose the baby weight the second time around, she did it by living healthfully. She credits trainer Tracy Anderson's 90-minute dance-focused workouts and small portion sizes for helping her lose the 44 pounds she gained while pregnant with Penelope.

Klearly, it worked!

Don't miss Kourtney & Kim Take Miami Sunday at 9 p.m. on E!

Take a look back at Kourtney's pregnant fashion!

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