Information for Ballet Shoes at Olivier (National Theatre), West End (Play). In a crumbling house full of dinosaur bones and fossils, three adopted sisters - Pauline, Petrova and Posy - are learning who they are and what they want to be. Under the watchful eyes and guidance of their guardian Sylvia, Nana, and some unlikely lodgers, they fight to pursue their individual passions. Can they forge a future, keep their family together, and even learn a dance or two along the way?