The actress broke the news with a tweet on Friday morning.
Very excited to go to my first wardrobe fitting of OITNB! Will I be in orange or black?:)
— Mary Steenburgen (@MarySteenburgen) June 12, 2014
“OITNB” was created by Jenji Kohan and stars Taylor Schilling. Production for the 13-episode third season is already underway. Season two premiered on Netflix on June 6.
Steenburgen is represented by UTA and Management 360.