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Britney Spears has been Instagramming some seriously sexy videos of herself in a bikini, so many wondered whether she was teasing new music or not.

Although she is working in the studio on new music, E! News can confirm that the three black-and-white sensual videos are not tied to any projects. "She's just having fun," a source tells E! News. "She's feeling great, is in great shape so she posted some videos she took."

And there you have it!

Brit Brit is set to re-launch her Las Vegas residency Feb. 13 but has been working on new music, too. Until she returns to the stage, everyone can remain in awe of how truly fabulous she does look. Although she's been "back" for a while, it's safe to say she is back and looking better than ever!

When Spears announced she would be extending her residency through 2017, she told E! News she had "some major changes planned" for the show. "I'm getting together with my team this week to go over the set list, design some new costumes and dream up new props," she said in September. "There are a few songs that are fan favorites that I really want to add to the show."

While reworking her Piece of Me show before returning to The AXIS auditorium inside Las Vegas' Planet Hollywood Resort & Casino, the 34-year-old pop star has whet fans' appetites by sharing videos on social media of herself and a dance crew rehearsing to "Breathe on Me."

Although it wasn't part of Spears' original set list, it looks like it could be making a comeback in her updated Piece of Me show. She used to perform it during The Onyx Hotel Tour in 2004, the M+M's Tour in 2007 and the Circus Starring Britney Spears in 2009. No word on what other songs she'll add to her reworked residency, but there's no doubt that she has plenty to choose from given her vast repertoire.