Demi Lovato

Demi Lovato is convinced that she's witnessed lots of paranormal activity in her life.

In an article she wrote for Buzzfeed in 2013, the 31-year-old singer said: "My house in Texas is so ridiculously haunted.

"Not by a bad spirit, but a little girl. I think her name is Emily. I've had a medium come over and ghost hunters, and they both told me the same name, Emily. There were so many times that I saw her when I was growing up."