Selena got her start on Barney. That's right, Barney. In the small town of Grand Prairie, Texas, Selena was cast as the roll of 'Gianna' when she was 7 years old. Now at the age of 16, she has her own hit TV series on Disney and a strong support system of fans and family. Selena's latest project was Ramona and Beezus filmed in Vancouver, Canada.