Elle Fanning’s quickly outpacing sister Dakota as the Fanning child to watch, and Ginger & Rosa is the most potent example of Elle’s abilities yet. 13-year-old Elle plays Ginger, a 17-year-old girl whose life is turned upside down in 1960s London as the threat of nuclear war looms. Ginger’s best friend, Rosa, is growing apart from her, while her parents also drift apart from each other. The film is unfortunately serviced by a subpar script, which wallows in vague melodrama.