Demi Lovato treated fans to a little Latina girl power onstage in Mexico City at the weekend, when she introduced Paulina Rubio.

Paulina joined her "little sister" for a rendition of Cyndi Lauper's anthem Girls Just Want To Have Fun.

The two pals clearly had a lot of fun at the Palacio de los Deportes, and Rubio took to social media after the concert and wrote: "Thank you for inviting me. I love you little sister, see you soon."

Demi is currently in Mexico with her Confident World Tour, and will perform this week in Guadalajara and Monterrey.