Looks like Reeve Carney‘s Jeff Buckley biopic – which finally has been titled “Mystery White Boy” – has his supporting cast, 6 months after production was set to begin in New York City.

Britain’s Daily Mail is reporting from Cannes Film Festival that Olivia Thirlby, and Brit actors  Gemma Arterton and Harry Treadaway have all joined the cast.

One of three films currently in some stage of production based on the life of musician Jeff Buckley who died tragically in a boating accident after only one album, the film is to be directed by Jake Scott (“Welcome to the Rileys”) and is the only one to to have exclusive rights to Buckley’s music and personal archives.

Arterton, a former Bond girl who can next be seen in vampire flick Byzantium with Saoirse Ronan, will play the partying woman in Buckley’s life, whilst Thirlby will represent the more responsible side to Buckley’s relationships.Thirlby broke out as Ellen Page’s dry best frend in the Oscar nominated “Juno” but has been sticking to indie flicks including Sundance entry “Nobody Walks”.

Brit actor Treadaway starred in 2007′s “Control” with Sam Riley and alongisde Ronan in 2008′s “City of Ember”, and will play Buckley’s first drummer, Matt Johnson.