Madonna Turns 51 With 23-Year-Old BF & Kids

Madonna's celebrating her 51st birthday with some help from her 23-year-old boy-toy, Jesus Luz, and her family.

After being serenaded on the eve of the big day, the birthday cougar and her much younger man took a boat ride today with her kids David, Mercy and Lourdes in Portofino, Italy.

The couple was seen kissing and cuddling during their cruise, before taking a dip in the ocean.

But dating a twentysomething stud isn't Madonna's only secret to staying young...

The Material Mom shielded herself from the sun with a parasol, even when she was in the water.

And instead of sporting a bikini, Madge remained covered up during her swim, wearing basketball shorts and a tank with her name emblazoned on them.

Do you think she's aging well?

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Check out this picture where Madonna's not looking quite so camera-ready!