Ariana Grande has called off her performance at the Major League Baseball All-Star Concert [1] on July 11 in Cincinnati, and Demi Lovato [2] is replacing her. Ariana's appearance cancellation comes right after a bizarre video of the singer [3] licking doughnuts and saying "I hate America" at a shop in in Lake Elsinore, CA, went viral, but it's not related to the controversy. The reason preventing Ariana from performing: she recently had three wisdom teeth removed. Demi, who is promoting her new single, "Cool For the Summer," [4] is taking her place and headlining the concert, and if her recent sexy performances [5] are any indication of the show she'll give, the audience won't be disappointed.