Demi Lovato teaming up with Missy Elliot

Demi Lovato is teaming up with rapper Missy Elliot in what has been deemed an unlikely collaboration.

The teen star is currently recording her third album after a stint in a treatment centre last year to deal with a number of personal issues, including self-harming.

Now Lovato has revealed she's enlisting the help of rapper Elliot for a collaboration.

She's taken to her Twitter page to post a photo of herself recording with the hip-hop star, writing: "4 am: Missy Elliott and Demi Lovato... working hard in the studio!"