Miller has replaced Lindsay Lohan in the part of Caitlin MacNamara, who cheated on her Welsh poet husband Dylan Thomas with Knightley’s character Vera Phillips in forthcoming John Maybury movie The Best Time Of Our Lives.
Knightley is looking forward to getting to know Miller properly and hopes Jude Law’s ex-fiancee will give her lessons in being the perfect party guest.
She says, “I wish I was Sienna Miller. I watch that girl and she’s just fabulous.
“She talks to everyone and laughs and smiles and looks as if she is genuinely enjoying herself.
I’m glad Lohan “dropped” out of the movie, i think Keira really really likes Sienna. Anywho that lesbian scene better be good and realistic, and i mean some insertion, oral and whatever else i see pornstars do on video.