Jennifer Lopez shared a hilarious Dubsmash video on Instagram on Tuesday. Jennifer, who is reportedly dating her on-again, off-again boyfriend Casper Smart, is shown acting out a scene from Wedding Crashers with him in the funny clip, saying, "Call me Kitty Kat." Nowadays it seems like every star is making a Dubsmash. Most recently, Tina Fey stopped by Late Night With Seth Meyers on Tuesday and ended up dropping one of the best Dubsmash videos ever featuring Maya Rudolph [2]. Watch Jennifer's comical acting skills above, and then check out 15 celebrities who are loving the popular app [3].