Madison Lee De La Garza, is an American actress, and is the younger half-sister of which American singer, songwriter, and actress, that after making her debut as a child actress in "Barney & Friends, she rose to prominence in 2008 when she starred in the Disney Channel television film "Camp Rock"?
Madison De La Garza:  She is the younger half-sister of singer-songwriter and actress Demi Lovato.
i don't know