Ashley Tisdale jumps for joy in her new advert for the got milk? campaign. The 26-year-old actress, wearing a 6 Shore Road dress with Sam Edelman heels and a Gerard Darel belt, hosted the Be Strong Challenge event on Tuesday afternoon (August 30) at The Grove in Los Angeles and got to see a few cheer teams show their stuff for the initiative.

What is the Be Strong Challenge? Glad you asked! Together with got milk? and American Cheerleader magazine, Ashley is kicking off a search for cheer squads across the country to become the next Milk Mustache celebrities. Squads are encouraged to submit a custom video of their squad demonstrating how they can “Be Strong” and refuel with lowfat chocolate milk at AmericanCheer leader Be Strong.