Demi Lovato with Paulina Rubio and Kelly Rowland. (May 21)

New rare picture of Demi Lovato with her best friend Marissa Callahan.

The vintage guitar signed by Demi Lovato that will be auctioned for charity on May 30th.

Demi Lovato signing a vintage guitar that's being auctioned for charity on May 30th.

Demi Lovato with Adir Abergel. (May 17)

Demi Lovato's upcoming appearances and events.

Demi Lovato's new tattoo.

Demi Lovato with Ariana Grande backstage at Wango Tango. (May 11)

Demi Lovato with her friend Michael Levine backstage at Wango Tango. (May 11)

Demi Lovato with Ryan Pallotta. (May 6)

Demi Lovato with her friends Chelle Goldberg and Michael Levine.

Demi Lovato with her friends Chelle Goldberg and Michael Levine.

New outtake of Demi Lovato's cover shoot for New Zealand's "Girlfriend" magazine.

New outtake of Demi Lovato's cover shoot for New Zealand's "Girlfriend" magazine.

New outtake of Demi Lovato's cover shoot for New Zealand's "Girlfriend" magazine.

The set of Demi Lovato's "Made In The USA" music video.

The set of Demi Lovato's "Made In The USA" music video.

The set of Demi Lovato's "Made In The USA" music video.

The set of Demi Lovato's "Made In The USA" music video.

The set of Demi Lovato's "Made In The USA" music video.