Chris Evans and Anna Faris will team for the R-rated comedy "What's Your Number?" at New Regency and 20th Century Fox says Variety.
Based on Karyn Bosnak's book "20 Times a Lady," the story follows a woman (Faris) who thought she'd find her perfect guy by the time she'd slept with a maximum of twenty men.
Waking up after a drunken night in her boss's bed, she realises she's reached that limit but hasn't achieved it. Rather than increasing the number or staying celibate, she tracks down all her ex-partners in an attempt to make things work with one of them.
Bosnak adapted her own work which Jennifer Crittenden and Gabrielle Allan polished. Beau Flynn and Tripp Vinson are producing.
Mark Mylod ("Entourage") is directing with shooting to kick off in May.