Lizzy Caplan, Kirsten Dunst, Adam Scott and Casey Wilson are attached to star in an indie comedy being produced by Will Ferrell and Adam McKay via their Gary Sanchez productions.Leslye Headland wrote the script, which has a working title of “Bachelorette” (that will likely be changed), and is directing.The story follows three best friends (two of whom would be played by Caplan and Dunst) who are invited to act as bridesmaids at the wedding of a girl they called “Pigface” in high school. The producers are still in the process of casting the third best friend.Caplan’s character is described as having a Playboy Bunny body with a Larry David brain. Dunst’s character appearance is described as crisp and severe, and she is referred to as your best friend and your worst enemy.Wilson, one of the stars of ABC’s Happy Endings, is playing the bride, who has big plans for three women. Scott, who starred with Caplan on the dearly departed comedy Party Down, will play Caplan’s high school crush, who shows up at the wedding with a beautiful and much younger date.The project, with a budget only in the $3 million range, is in the process of lining up its financing. Depending on scheduling, producers are hoping to shoot this summer in New York.The movie would be the feature directorial debut of Headland, repped by CAA and Caliber. Headland was at one point an assistant to Harvey Weinstein before becoming a staff writer on the FX show Terriers.The project began life as a play titled Bachelorette, which was an off-Broadway hit last summer, where it caught the attention of execs from Gary Sanchez.Caplan is repped by CAA, while Dunst is with UTA and Management 360.Scott is repped by CAA and Untitled while Wilson is repped by UTA and Odenkirk Provissiero Entertainment.Source: Borys Kit www.hollywoodreporter.comI’ll just add that there’s been no official announcement about this film (or Kirstens participation in it) at this stage.