Credit: Jim Spellman/

Don't count Sienna Miller among those who think that the skinniest girl in the room is always the prettiest.

The British actress shared her enthusiasm for "plus-sized" models with a New York magazine reporter on Sunday. "I sincerely believe that that's more beautiful than someone who is poker-thin. I really do," Miller, 27, said of voluptuous women.

Did Sienna look better before or after one of her famous breakups?

The actress -- currently performing on Broadway in After Miss Julie, wishes she had more curves herself. "I would love to have boobs to go with my hips, but I don't," she says. "That's just not the way the cookie crumbled."

 And Miller seems to have had somewhat traumatic experiences as a model herself. Before she made it in film, she found work posing at photo shoots: "I was, like, the short, funny one that they booked to make the other girls laugh and to make them look taller," she laments.