Lily JamesLily 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 as Lady Rose MacClare in the period drama series ''Downton Abbey'' (2012–2015), James had her film breakthrough playing the title role in the fantasy film ''Cinderella'' (2015).
James went on to play Countess Natasha Rostova in the period television series ''War & Peace'' (2016). In 2017, she starred in the action crime film ''Baby Driver'' and the war drama film ''Darkest Hour'', both of which were critically and commercially successful. She then starred as the younger version of Donna Sheridan in the well-received musical film ''Mamma Mia! Here We Go Again'' (2018). Provided by Wikipedia