By Breaking Celebrity News Staff

And you thought the summer couldn't get any hotter.

Robert Pattinson and Kristen Stewart show why they're sexy A-listers in these just-released pics from the set of their upcoming film in The Twilight Saga, Breaking Dawn - Part 1.

In one pic, we see a shirtless Pattinson, 25, and Stewart, 21, wearing a bra, embracing in water.

In another pic, we see the couple lounging in bed, and in another, they’re playing chess.