Sienna Miller at BMWi3 launch

Sienna Miller at BMWi3 launch

Sienna Miller will only leave her daughter for "spectacular" movie roles.

The 31-year-old actress admits she became "disillusioned" with her jet-setting Hollywood lifestyle prior to having 12-month-old Marlowe - her first child with fiancé Tom Sturridge - and has decided to be more selective about the roles she accepts because she doesn't like to be away from her little girl.

She explained: "I just think I was living quite a hectic life. I was shooting five films a year, things were crazy; I was in my twenties, I was all over the place, working and moving house. Working at a speed that ... for me, was not particularly fulfilling.

"I felt like I needed to take a bit of a break and re-evaluate things, which I did. I came back and did 'Flare Path', which was wonderful, and now 'Foxcatcher', which is a fascinating true story. I felt, having done that, that unless it's of that calibre it's not worth not being with my baby. Unless it's something spectacular, I really want to be a mother."

The blonde beauty has dominated best dressed lists throughout her career, but Sienna claims motherhood has dulled her stylish senses and she has swapped couture dresses for drab jogging bottoms.

Speaking at the launch of the BMWi3 car at the Old Billingsgate in London on Monday (29.07.13) she lamented to the Evening Standard newspaper: "I don't have time to be fashionable anymore! The last thing I'm thinking about when I wake is what I'm going to wear. It's nice to put on a nice dress, but it's tracksuits and old T-shirts for me these days."

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