Keira Knightley is reportedly "furious" that Lindsay Lohan pulled out of the film the pair were set to co-star in. Lohan withdrew from The Best Time of Our Lives due to contract issues three days before the movie was due to begin filming. Knightley is unhappy with the Mean Girls star's decision as she was involved in getting Lohan to appear in the film, for which her mother wrote the screenplay. However, Sienna Miller is now likely to step into the role, according to Variety. Miller and Knightley will play two women fighting for the attention of poet Dylan Thomas.source