Alessandra Ambrosio flaunts her toned midriff playing paddle ball as son Noah takes surfing lessons in Santa Monica

Alessandra Ambrosio proved to be a total beach babe on Wednesday afternoon, when she was spotted playing paddle ball with a pal in Santa Monica. 

The 39-year-old model flaunted her toned midriff and radiant tan as she ran around with her paddle in hand.

Meanwhile, Ambrosio's son Noah, eight, attempted to master the art of surfing with a little help from a highly trained surf instructor. 

For her day by the ocean, Alessandra flaunted her sculpted legs in a pair of denim Daisy Dukes that featured a stylish raw hem and multi-colored stripe detailing. 

She paired her distressed bottoms with a flouncy, olive toned blouse layered over a bright orange bikini top and tied in a knot.