Sienna Miller in green Burberry trench coat in London on August 19

Sienna Miller seen leaving London's Apollo theatre on August 19 2017

WHAT SHE WORE: Sienna wore olive green trench coat from Burberry, grey skinny jeans and black Givenchy bag

BUY:

TRENCH COAT: BURBERRY TROPICAL GABARDINE OVERSIZED TRENCH COAT GREEN