20times.jpgAnna Faris and Chris Evans are set to star in What's Your Number - a movie based on Karyn Bosnak's chick-lit novel Twenty Times a Lady.

According to ComingSoon, What's Your Number will be directed by Mark Mylod (Entourage) and will begin production in May.

For those who have not read Karyn's hilarious book, here's the blurb:

How many men does it take to find true love?

Delilah Darling's magic number was supposed to be twenty. She always thought she'd find the perfect guy by the time she'd slept with twenty of them. But when she wakes up naked in her disgusting boss's bed after a drunken night out, she's filled with regret -- and realizes she's hit her self-imposed limit. Unwilling to up her number but unable to imagine a life of celibacy, Delilah does what any girl in her situation would do: she tracks down every man she's ever slept with in a last-ditch effort to make it work with one of them.