Cameron Diaz takes on Kate Upton in a battle of the bikini bods.

 Cameron Diaz and Kate Upton were spotted splashing around in the Caribbean sea.

But while Cameron, 40, showed off her sleek and toned, athletic figure, Kate, 21, was all about the curves with her bikini barely containing her ample cleavage.

The blonde stars of fashion and film hit the surf  and had a great time bonding on the beach.

And the winner is...