Mary Steenburgen is headed to prison.

The veteran actress (30 Rock, Wilfred, Justified) announced today via Twitter that she has booked a role on Orange is the New Black Season 3.

Details on the role are unavailable at this time, but the excited star Tweeted just a few hours ago:

Very excited to go to my first wardrobe fitting of OITNB!  Will I be in orange or black?:)

Netflix renewed Orange for a third season in early May, a month prior to the June 6 release of Orange is the New Black Season 2.

Earlier this week, it was announced that Dascha Polanco (Daya) will be a Season 3 series regular.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.