The latest sexy rumour about Robert Pattinson and Kristen Stewart comes from a gossipy "mate", who's told the world that when the couple scamper off to Spain next month for the Cannes Film Festival, Kristen's gonna get in her skimps and rustle up a cheese sarnie.

Or something similar, we imagine.

edward and bella in te waterfall breaking dawn honeymoon

"She’s already gone and bought a ton of new lingerie,” a snitcher told OK.

“She’s going to bring it with her.”

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Now, as lovely as this all sounds, Kristen's going to have to carefully plan this meal if she really is set to bake in her briefs - you don't want hot food spashing on yer tenders.

edward and bella on the breaking dawn honeymoon

"Kristen promised Rob she’ll make time for a romantic getaway after he convinced her to add a couple days onto the trip for some quality time together,” the gossip-monger continues.

“There are some really epic nightclubs in Madrid and they’re already planning a big night out.”

Ahh, how sweet. Just Rob, Kristen, and the world's paparazzi following their every move.

PICS: Rob and Kristen at Coachella 2012

PICS: Kristen Stewart goes blonde for new film

PICS: Robert Pattinson looking hot and dangerous in Cosmopolis

What do you think?