Dermot Mulroney is joining the cast of A-list stage and screen stars for the film adaption of Tracy Letts' Pulitzer Prize-winning play "August: Osage County."
Mulroney will be reunited with his "My Best Friend's Wedding" co-star Julia Roberts.
In "August: Osage County," Mulroney will play Steve, a less-than-noble businessman whose eye wanders to the pot-smoking daughter of Barbara (Roberts), played by "Little Miss Sunshine’s" Abigail Breslin.
As previously announced, Tony Award winner Margo Martindale ("Cat on a Hot Tin Roof") and three-time Oscar winner Meryl Streep will play sisters Mattie Fae Aiken and pill-popping Violet, respectively.
Screen stars Juliette Lewis and Chris Cooper round out the ensemble. The screenplay was penned by Letts; John Wells ("E.R.," "Shameless") is to direct.