Sienna Miller and M&S have your cool-girl autumn wardrobe covered

Sienna Miller and M&S have your cool-girl autumn wardrobe covered

Sienna Miller M&S: Sienna Miller's the new face of Marks & Spencer

Sienna Miller partners with Marks & Spencer on its autumn range

M&S's new blonde? Super stylish Sienna Miller: The 41-year-old

Sienna Miller partners with Marks & Spencer on its autumn range

I'm a Fashion Editor and these are my picks from Sienna's range at

Spring capsule wardrobe: how to shop for spring

Marks & Spencer Enlists Sienna Miller to Reach New Shoppers

Choosing Sienna Miller as the face for M&S's autumn womenswear

I'm a Fashion Editor and these are my picks from Sienna's range at