Watch out, Katy Perry. There's a new pop star in town and you're definitely going to hear her roar.
According to the MidAtlantic Make-A-Wish Foundation, 5-year-old Addy was diagnosed with stage IV cancer at the age of 4. During radiation and chemotherapy, she danced and sang pop songs to keep busy -- particularly, to Katy Perry songs.
Thanks to Make-A-Wish, Addy's dream of being in her own music video has come true. Her very own "Roar" video debuted this past Monday, where Addy rocked Katy's signature purple hair.
Addy is currently cancer free, too, making the lyrics she sings in the above video all the more sweeter. Go, Addy!