When I ask if she's met that other great British export, Sienna Miller, she coos, 'She's my roomie!' In the same block as David Bowie, they share an apartment - and a wardrobe. 'Sienna's very easy and generous about letting me borrow things.'
Do they throw many parties? 'We don't, because she does plays every day' - Sienna is currently performing in Strindberg's After Miss Julie on Broadway. 'But during the day she might make a delicious risotto, or after she gets back at night we talk over the play with a glass of wine...'