Keira Knightley and Sienna Miller: BFF’s!

Sienna Miller proved in London last night that you’ve got to have friends, even better when they’re costars.

Miller and fellow beauty Keira Knightley turned out in BFF-force to the British Independent Film Awards, held on the Thames riverfront in London at the historic Old Billingsgate.

The pair strode the carpet to promote their new romantic triangle flick Edge of Love, a loose biopic  of poet Dylan Thomas, costarring Miller’s once-paramour Matthew Rhys.

Rhy stars on ABC’s Brothers & Sisters, alongside Miller’s current (again) paramour Balthazar Getty.

The pair were spotted rekindling their headline making affair on Thanksgiving, when 26 year-old Miller attended a book party in London with Getty, 33. While that night they were spotted socializing as late as 2:30am, we’re guessing Miller had a softer go with Kiera.

Knightley has already settled on one beau, which we admit is a decidedly positive influence on embattled Miller.