Sienna Miller is replacing Lindsay Lohan in the much talked about film, "The Best Time of Our Lives", where she is set to star along side (and make out with) fellow British beauty Keira Knightley.

Last year, Lohan put this film on the radar of many when she hinted at the possibility of some lesbian love scenes with Keira Knightley:

"Keira is older than me, but she kind of has a mysterious relationship with my lover and there's somewhat of a lesbian undertone."

The film focuses on Welsh poet Dylan Thomas, which is set to be played by actor Matthew Rhys, and his wife Caitlin MacNamara (played by Sienna Miller). It leads up to a 1945 event where one of Thomas' childhood friends, Vera Phillips (Kiera Knightley) and later husband William Killick (Cillian Murphy), open fire on the Thomas' house with a machine gun and hand grenade.

Written by Kiera's mother, Sharman Macdonald, "The Best Time of Our Lives" has shooting scheduled to begin next month in Wales. And if what Lindsay had hinted at before is true, we'll soon be seeing some girl-on-girl action between Kiera Knightley and Sienna Miller on the big screen (and maybe even YouTube).