One star is for costumes. Another one is for choreography (which I am not sure why is there since the movie isn't a musical).
The movie isn't funny. It lacks a story. The character of the prince is not well defined. Overall the movie is shallow, it lacks depth and emotion. Eddie murphy and other older actors - did not do good acting work. Young actors are simply embarrassing to watch. too much obvious product placement: Puma, Pepsi, Bvlgari, etc.. somehow the pace of the movie felt rushed - especially in the beginning. I think the authors knew that older generation will watch it anyway because they loved the first movie, so they predominantly catered to the younger audience.