The present invention is generally related to dolls, and in particular, a doll having a costume element such that the doll can change into different characters using the costume element. The doll may have body with a torso and at least one appendage. The doll also may have at least one from the group consisting of the torso and the at least one appendage that defines a cavity and a costume element that is storable within the cavity. At least a portion of the costume element is configured to engage at least a portion of the body of the doll. The costume element may be any design including a tail, wings, an outfit, pants, a shirt, a head piece, a swimsuit, a jacket, or any other type of costume.