Shawn Johnson Bings It On with Derek Hough

Derek Hough hangs out with two of his favorite ladies — Shawn Johnson and Maria Menounos — during the national Bing It On Challenge held at The Grove in Los Angeles on Thursday afternoon (September 13).

During the event Maria and Derek challenged locals to see if they prefer Bing or Google, with challenges including dance-offs between two, arm wrestling matches, pies to the face, and hula hoop battles.

PHOTOS: Check out the latest pics of

Shawn stopped by to surprise Maria and Derek, and even teamed up with Maria to silly string Derek!

10+ pics inside…