Demi Lovato's little sister and Desperate Housewives star Madison De La Garza is a huge Justin Bieber fan -- her Twitter bio even says, "P.S. I love Justin Bieber."
We caught up with the sequined star at the Camp Rock 2: The Final Jam premiere, and we had to ask her favorite thing about Justin:
What's your favorite thing about Justin Bieber?
Photo: Anthony Randell/Disney Channel