Premise: Nell Tiger Free (born 13 October 1999) is an English actress and singer best known for her role as Myrcella Baratheon in season 5 of the television series "Game of Thrones," where she replaced Aimee Richardson. She is also known for roles as Chloe Crumb in the film version of "Mr. Stink" and Anna in the film "Broken."
Hypothesis: Myrcella was played by someone else before season 5.