“Barbie” (** out of four) was a glitzy but empty-headed adaptation of the legendary character/cartoon series about Barbie (Margot Robbie) who has a sudden crisis of conscience which leads her to question her reality and that of Ken (Ryan Gosling). Impressive candy-colored production design and cinematography captures your eye and Robbie is well cast in the lead but script and story are pretty plastic and insubstantial. Director Gretta Gerwig employs several great soundtrack selections to make up for some real lulls along the way but it only works so much.