New Line is launching development of a heist movie set at the star-studded annual Met Gala in New York City.

The Warner Bros. division picked up the spec script “Met Gala Heist,” written by Gregg Rossen and Brian Sawyer, and set up the project with Michelle Sy. The story focuses on a pair of sisters who employ an all-female crew to pull off a heist during the gala.

The Met Gala, also known as the Met Ball, is an annual fundraising gala for the benefit of the Metropolitan Museum of Art’s Costume Institute. Richard Brener, Michael Disco and Samuel J. Brown will oversee the project for New Line.

Rossen and Sawyer have teamed on writing TV movies “Northpole” and “Santa’s Switch.” They are repped by Original Artists, Jonathan Hung and attorneys Coldin McKuin and Frankel.

Sy was an executive producer on 2004’s “Finding Neverland.”

The news was first reported by The Hollywood Reporter.