Demi Lovato is a Tennis Ball Babe

Camp Rock cutie Demi Lovato grabs hold of a huge tennis ball at 2008 Arthur Ashe Kids Day at the USTA Billie Jean King National Tennis Center on Saturday in Queens, New York.

The popular full-day tennis and music festival for children and families – including interactive games, musical entertainment, and tennis clinics – was hosted by MTV’s Susie Castillo and Nickelodeon’s Quddus. Also in attendance: boy band Menudo, singer-songwriter Colby O’Donis, Olympic gold medalist swimmer Cullen Jones, and Ugly Betty‘s Mark Indelicato.

Check out Demi Lovato‘s “Get Back” music video below, which was released last night!