Besides giving a concert, she also went to the opening of the new Hannah Montana movie. 

As we have shown you, Demi Lovato has been in London for a few days now and is taking advantage of her time there. Besides putting on a show, she also greeted the hundreds of fans who came to see her. 

Miley Cyrus was presenting her new movie in London and Demi didn't want to miss the chance to support her friend. As you can see, both of them are good friends and are two artists bound by common goals. 

Here are a few photos!