Lindsay Lohan Out, Sienna Miller In

 Image by Splash News

British babe Sienna Miller will take over party girl Lindsay Lohans role alongside Keira Knightley in the flick, 'The Best Time of Our Lives'. If you ask us, Knightely and Miller are better off. Lindsay's a terrible actress.

The flick, that's set to start shooting in May, is based on a rivalry between two women over the Welsh poet Dylan Thomas. Sienna Miller will play his wife, Caitlin MacNamara, and Knightley plays his childhood friend Vera Phillips.