Robert Pattinson and Kristen Stewart nearly naked in skimpy swimsuits

Revealing images of Robert Pattinson as vampire Edward Cullen and Kristen Stewart as Bella Swan, nearly naked.

Pattinson and Stewart were snapped in skimpy underwear in Paraty, south of Rio de Janeiro, Brazil, on their honeymoon.

The real-life couple were filming scenes for Breaking Dawn

In one sexy scene, Bella (Stewart, 20) and Edward (Pattinson, 24) stripped before jumping into the lake.

Stewart donned a sexy white bikini, while Pattinson wore a pair of red swim trunks hanging low on his waist. Some shots revealed his butt.

"They are much more open about being a couple," a source close to Pattinson recently told Us Weekly. "You can't not love them. They are the cutest."

"I wouldn't be surprised if they got married in the next year."