Biography: Adrianne Irene Cox (née Kangas; born October 5, 1992 in Fairfax, Virginia) is a former American actress, who made waves in the TV industry and became one of the most greatest TV child megastars of the 90s decade as the breakthrough role of Chip's adorable younger sister, Linda, on the popular PBS series Barney & Friends and for numerous commercials. She is also a talented singer, and her singing has been featured on Barney.