The duo have joined forces for a collaboration called Back To You - and Louis confirmed the news by sharing a picture of the pair stood in the middle of the Keepmoat Stadium pitch on Instagram.
Bebe had already let the cat out of the bag during a TV interview in March when she said: "There's a new song that I just finished with a very big… somebody really big from a boy band,”
“It’s a really massive record. We just finished it and it’s about to come out in a month or so.”
The American star is best known as a guest vocalist on G-Eazy's Me, Myself & I, David Guetta's Hey Mama and Martin Garrix's In the Name of Love.
She also co-wrote the chart-topping Eminem and Rihanna single The Monster and also released the single No Broken Hearts featuring Nicki Minaj.