The "Call Me Maybe" singer has been tapped for the Annual Arthur Ashe Kids' Day at the U.S. Open. She'll join The Wanted, Owl City and Cymphonique Miller, along with reigning men's champion Novak Djokovic , past women's champion Kim Clijsters and John Isner.
The Aug. 25 event, held at the Billie Jean King National Tennis Center in Flushing, N.Y., will feature performances as well as exhibition matches and other activities.
This is the 17th annual Kids' Day. Last year, it was canceled because of Hurricane Irene.
The U.S. Open, tennis' final Grand Slam of the year, begins Aug. 27.
