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Guess Who

Norman Scott/startraksphoto.com

Can you believe this singer and actress had two babies?

She showed off her taut midsection while launching a new tech gadget on Tuesday in LA.

We're not the only ones giving her accolades for her good looks. She just landed a major magazine cover for being so hot.

Think you know which hot mama is baring her toned tummy? Find out after the jump...

Jennifer Lopez

Norman Scott/startraksphoto.com

It's Jennifer Lopez, a.k.a. the Most Beautiful Person of 2011, according to People.

The newest American Idol judge chose this ensemble for the BlackBerry PlayBook launch party at BestBuy in LA last night.

Apparently, she was very happy with the turnout at the event.

"Seeing so many of my #LOVE?RS was amazing yesterday!!! Thank You for coming to see me and the #PlayBook @BestBuy.... #teamblackberry," she tweeted.

J. Lo obviously knows that showing some skin is always a crowd pleaser.

WATCH: Behind the scenes of her Most Beautiful shoot