Miller Takes Lohan's 'Lives'

Sienna Miller has snagged the lead in "The Best Time of Our Lives," a part originally intended for Lindsay Lohan.

According to Variety, Miller will join Keira Knightley, Cillian Murphy and Matthew Rhys in the John Maybury-directed film.

Set to begin production in May in Wales, "The Best Time of Our Lives" focuses on a love triangle involving poet Dylan Thomas (Rhys), his wife Caitlin (Miller) and his childhood friend Vera (Knightley).

Knightley's mom, Sharman Macdonald, wrote the script.

Lohan signed on to play Caitlin back in October, but contractual details caused the actress to drop out last week. With Lohan out of the picture, producers turned to Miller, who earned strong reviews late last year for the drama "Factory Girl."

Miller's busy upcoming slate includes the Steve Buscemi-directed "The Interview," the fantasy film "Stardust" and the Michael Chabon adaptation "The Mysteries of Pittsburgh."