Five-year-old Addy is a brave little girl who is battling stage 4 cancer and has credited a lot of her strength to Katy Perry's song "Roar."

That's when Make-A-Wish got involved and turned Addy into a world famous popstar by shooting a big budget music video with Addy as the star singing her favorite Katy Perry song...

Grab a Kleenex quickly, then watch Addy make her dream come true...