Rihanna and Britney Spears collaborate on 'S&M' remix

This is pretty epic!

Rihanna asked fans on Twitter who they'd like to see her collaborate with, and the response was overwhelmingly Britney Spears. What Rihanna's fans want, they get, so the popstars made it happen!

"I got a #SEXY collabo comin your way supa dupa soon!!!! OH YEAH!!! By popular demand...." Rihanna tweeted on Sunday afternoon.

Minutes later, Britney responded via her own Twitter: "@rihanna You're such a tease! I like it, like it.... -Britney"

Britney fans, enjoy this embarrassment of riches. First the "Femme Fatale" record, and now a collaboration with Rihanna that's sure to be fierce? When Britney's back, she's really back. Rihanna is well-known for her surprising collaborations - her duet with Jennifer Nettles at the Academy of Country Music Awards was refreshingly original - so we're psyched to see what she comes up with next.