Photos: Robert Pattinson & Kristen Stewart in their smalls

Check out these photos of Robert Pattinson and Kristen Stewart in their swimwear.

The Daily Mail reports that the snaps were taken of the couple showing them playfully stripped down and swimming together in the ocean in Brazil.

Twilight actress Kristen, 20, may have been wearing a cute white bikini, but co-star and rumoured boyfriend Rob, 24, jumped in the sea in nothing but his Calvin Klein boxers.

The site reports that as Robert leapt yelling over Kristen’s head, she ducked low in the water and grimaced at the oncoming splash from her boyfriend.

Witnesses also spotted Kristen jumping on Robert’s back for a piggyback ride.

The pair were in Brazil to film scenes for Breaking Dawn, and were even spotted locking lips – although this was for the film.

It’s nice to see them having fun and looking happy. Usually they just look harassed by the paps.

Click here to see the photos.