Britney Spears' filthy threesome tale

Britney Spears' new song is about having a threesome.

The 'Womanizer' singer – who is known for wearing revealing, skin-flashing outfits on stage - has penned a track called '3' which suggests she likes being intimate with two lovers at the same time.

On the track, Britney sings: "Three is a charm / Two is not the same / I don't see the harm / So are you game?"

The chorus continues: "One, two, three / Not only you and me / Got one eighty degrees / And I'm caught in between.

"Countin' one, two, three / Peter, Paul and Mary / Getting' down with 3P / Everybody loves ***."

The racy song is due to appear on Britney's upcoming album The Singles Collection.

This is not the first time Britney's career has taken a provocative twist.

The 27-year-old star – who as a teenager said she wouldn't have sex before marriage - is currently on the road with her steamiest world tour to date.

The Circus Starring Britney Spears - which received rave reviews - features skimpy costumes, seductive dance moves, whips, latex and blindfolds.

- BANG! SHOWBIZ