Knightley received a nomination for the Academy Award for Best Actress for starring as Elizabeth Bennet in "Pride & Prejudice" (2005). At age 20, it made her the second-youngest nominee in the category at the time. Knightley's profile continued to grow with leading roles in several other period dramas, earning acclaim for her roles as Cecilia Tallis in "Atonement" (2007), Georgiana Cavendish in "The Duchess" (2008), and the titular characters in "Anna Karenina" (2012) and "Colette" (2018). She received her second Academy Award nomination for her portrayal of Joan Clarke in the historical film "The Imitation Game" (2014), as she continued to experiment with comedic and dramatic roles in the musical film "Begin Again" (2013), the adventure thriller "Everest" (2015), and the docudrama "Official Secrets" (2019).