For a woman with three children, Kimora Lee Simmons rocked her bikini like a woman half her age while taking a Christmas Day beach stroll.

The 36-year-old is enjoying a festive vacation in St Barts with her partner, actor Djimon Hounsou, and their adorable two-year-old son Kenzo.

The model-turned-fashion mogul looked amazing in a tiny black two piece.

Hounsou, 47, got in some exercise to keep his athletic body in the fantastic shape it is in by carrying their adorable tot on his shoulders as they soaked up the sun on the French Caribbean island.

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Kimora has two daughters from her marriage to Phat Farm and Def Jam honcho Russell Simmons, Ming, 10, and Aoki, nine, were also with the couple.

The astute businesswoman is adding to her Baby Phat and KLS clothing line by launching a new style website, justfab.com.

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“I want to make glamor accessible to every fashionista,” she said recently.

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