This rumor is so not true, according to Spears! The songstress just shut down that rumor during an interview Wednesday with BBC Radio 1's Scott Mills.
"Britney there's a lot of rumors that you might be doing a track with Justin Bieber, is there any truth in that?" Mills asked.
"No, there's no truth to that at all," Spears laughed.
While it sounds like that's not happening right now, it would be a pretty awesome collaboration in the future!
During the interview, Spears also revealed she nearly drowned while on vacation recently in Hawaii.
Watch the E! News video above to find out what happened!