Britney Spears releases new song "Swimming In The Stars" for her birthday

 Britney Spears attends the announcement of her new residency, 'Britney: Domination' at Park MGM on October 18, 2018
Photo credit Photo by Ethan Miller/Getty Images

Britney Spears celebrated her 39th birthday this week by giving fans a "new" song.  It's called "Swimming In The Stars" and Britney actually recorded it for her 2016 album "Glory" but the song didn't make the cut.  Check it out below: