Dakota Fanning and Jeremy Irvine are to star in "Now Is Good" the film adaptation of Jenny Downham's debut novel "Before I Die", about Tessa, a teenager with just a few months to live who has a wish list of things she wants to experience before she dies, including sex, drugs and crime led by the goal of losing her virginity.
Ol Parker will direct and Paddy Considine and Olivia Williams will co-star alongside the youngsters.
Graham Broadbent and Pete Czernin will produce for BBC Films.
Jeremy, who'll be seen this year in Stephen Spielberg's War Horse, will also star as Pip in Mike Newall's up-coming feature film of Great Expectations alongside Helena Bonham-Carter, also for BBC Films.
Now is Good is due to start shooting in July.
UPDATE: And Kaya Scodelario of Skins and Wuthering Heights (out later this year) fame has joined the cast too, presumably to play Tessa's best friend Zoey.