Sienna Miller and Keira Knightley are preparing to
shoot an onscreen lesbian scene, but off screen, the pair are more interested in
tomfoolery.
Taking time out between takes of romantic drama The Best Time of Our Lives,
the Hollywood stars frolicked along the Wales beachside and giggled like
schoolgirls.
Keira says she wishes she could be more like her
co-star Sienna Miller
The stars are teaming up with actor
Matthew Rhys for a steamy threesome scene - Rhys plays Welsh poet Dylan Thomas,
who has two women competing for his love.
Miller, who plays Thomas' wife, stepped into the role
after troubled actress Lindsay Lohan pulled out over monetary negotiations.
Knightley has spoken of her real life affection
and admiration for her co-star.
