Cameron Diaz: "Knight and Day" Beach Babe

Joining up with co-star Tom Cruise for week-ending work duties, Cameron Diaz was spotted on the set of "Knight and Day" in Malibu on Friday (February 12).

Covering up her blue bikini top with a sheer white buttondown top, the "Charlie's Angels" actress sported a nifty brimmed hat and short-shorts as she romped around the shoreline during the day's filming session.

The sighting comes just after Miss Diaz stirred up romance rumors after spending a good deal of time alongside Alex Rodriguez at the Super Bowl festivities in Miami this past weekend.

“They are totally into each other and weren’t concerned about hiding it at all. They were really playful and seemed to be having so much fun together,” a source tells FOX Pop Tarts of the twosome.

Celebrity Gossip

Enjoy the pictures of Cameron Diaz on the set of "Knight and Day" (February 12).