Sienna Miller Ballet Flats
Sienna Miller's red ballet flats were a sophisticated and statement-making finish to her tailored look.
Sienna Miller Cardigan
Sienna Miller attended the Hamptons International Film Festival looking preppy in a black cardigan layered over a white button-down.
Sienna Miller Print Pants
Sienna Miller sealed off her outfit with a pair of printed silk pants by Sea New York.