If you thought Lady Gaga and Beyonce's 'Telephone' duet was hot, just wait until you hear the new version of Rihanna's 'S&M,' featuring none other than Britney Spears.
The top 10 single was re-released today, following a Twitter tease yesterday by Rihanna and Britney.
"I got a #SEXY collabo comin your way supa dupa soon!!!! OH YEAH!!! By popular demand…it's Britney b****!!" said Rihanna.