Are Barbie dolls demeaning or empowering? Director Greta Gerwig and her co-writer Noah Baumbach opt for the latter theory in this beamingly affectionate and deliriously pink-themed fantasy comedy-adventure produced by Barbie’s corporate manufacturer Mattel, and starring Margot Robbie whose own superhuman blond beauty makes her the only possible casting as Barbie herself. It is maybe down to Gerwig’s confidence and generosity as a feminist film-maker that she gives all the best lines to Ryan Gosling, who is allowed to steal the whole film playing Barbie’s non-genitaled boyfriend, Ken.