Brooke Burke "String Bikini" on the Malibu beach

It isn't hard to imagine what Brooke Burke and David Charvet see in one another.

The toned twosome strolled along a Malibu beach on Monday afternoon hand-in-hand looking completely in love.

The 39-year-old mother of four looked lean and fit in her geometric print string bikini and glamorous oversized shades.

Beautiful bodies! Brooke Burke and fiance David Charvet stroll along the beaches of Malibu together yesterday (See more Pictures)