Lily Chloe Ninette Thomson (born 5 April 1989), known professionally as Lily James, is an English actress. She studied acting at the Guildhall School of Music and Drama in London and began her acting career in the British television series Just William (2010). Following her supporting role in the period drama series Downton Abbey (2012–15), she had her film breakthrough as the title role in the romance fantasy film Cinderella (2015).
James went on to play Natasha Rostova in the period television series War & Peace (2016), and took on starring roles in several films, including the action film Baby Driver (2017), the war drama Darkest Hour (2017), the historical drama The Guernsey Literary and Potato Peel Pie Society (2018), and the musicals Mamma Mia! Here We Go Again (2018) and Yesterday (2019).