Kate Beckinsale: Black & White Bikini Mama!

Kate Beckinsale shows off her rockin’ bikini body while hanging out poolside during a family vacation on Friday (March 29) in Cabo San Lucas, Mexico.

The 39-year-old actress was seen checking out information on a Macbook.

PHOTOS: Check out the latest pics of Kate Beckinsale

Earlier in the week, Kate was spotted flashing her flat tummy in a white bikini while hanging out with her daughter Lily.

“She [Kate] has a naturally beautiful body, so yoga really keeps her toned and trim, highlighting her shape. She is very in tuned into her body,” Kate‘s trainer Mandy Ingber recently shared about Kate‘s workout routine.

30+ pictures inside of Kate Beckinsale showing off her bikini body…