According to Bookslut, Sienna Miller likes to read poetry:
She revealed: "It sounds so pretentious but it's one of my favourite things. I've got this group of friends who are quite Bohemian and we get drunk, get the poetry books out and read."Wow, Sienna. That's deep. Bet you think you're so much better than Victoria Beckham.
(Given her situation with cheater maximus Jude Law, I'd think she'd need some serious feminist poetry about now. Audre Lorde perhaps?)