This is largely due to what she wears before the action kicks in and she gets all mucky trying to save people from dinosaurs.
Dressed in co-ordinating shades of silk in very dry-clean-only eau de nil, with a nice bit of shoulder robing and the Phoebe Philo-approved combo of silk shirt and delicate gold necklace, it’s actually the non-clothing elements of this outfit that nail the thing.
See the fringed haircut – a bit Uma in Pulp Fiction, a bit Sam Rollinson – and the stance when dealing with the uncouth presence of Chris Pratt complete with a weapon holster and dirty T-shirt. Cock head to one side, clasp hands and don’t quite smile. BDH is now well and truly on our radar.