Sienna Miller may be known for her stunning style ... 42, wearing a white mini dress with a glamorous pale pink bow detail. The two were there with Miller's boyfriend, Oli Green, 27, for the ...

ET's Cassie DiLaura sat down with Horizon: An American Saga director and star Kevin Costner as well as stars Sienna Miller ..

M&S x Sienna Miller’s 33-piece collection of summer ... backless mules and a printed silk mini dress. However, the stand-out piece is the broderie blouse that Miller wore this week at the ...

Leave it to Sienna Miller to provide us with the perfect day ... From crop tops and low-rise trousers to underwear-bearing sheer dresses, she's the true definition of a fashion chameleon.