Showtime is picking up its hit comedy series SMILF for a second season, it was announced today by Gary Levine, President of Programming, Showtime Networks Inc. Created, starring and executive produced by Frankie Shaw, SMILF is a raw, honest look at the life of a 20-something single mom based on her Sundance Film Festival Jury Award-winning short film of the same name. The series also stars multiple Emmy winner Rosie O'Donnell in her first series regular TV role. SMILF will go back into production next year. The season one finale will air on New Year's Eve, December 31 at 10 p.m. ET/PT, with a special preview available online and On Demand on Friday, December 29.

SMILF debuted with the biggest premiere week audience for a new Showtime comedy since 2012, and had its best total night this week since the series premiere. The series is currently averaging 4.4 million weekly viewers across platforms. Here's what Showtime programming president Gary Levine had to say in a statement about the Season 2 renewal.

"From its first episode, the refreshingly honest point of view of SMILF broke through with audiences, the press and on social media. Frankie Shaw is a creative force to be reckoned with and we love having her on Showtime. Her show is funny and forthright, pointed and poignant, irreverent and relevant, all at once. We can't wait to see where Frankie takes SMILF next season."

SMILF takes a comedic look at the life of Bridgette Bird (Shaw), a young woman from South Boston whose desires for relationships, sex and a career collide with the realities of working-class single motherhood. Shaw brings her singular, unapologetic point of view to the semi-autobiographical Showtime comedy series, whose title is meant to be ironic and to reclaim the demeaning nature of the label. The cast also includes Alex Brightman as Jesse, Austin Abrams as Casey, Graham Rogers as David, Kimberley Crossman as Kit-Cat, Kyle Vincent Terry as Ben, Miguel Gomez as Rafi, Raven Goodwin as Eliza, Rosie O'Donnell as Tutu, Samara Weaving as Nelson Rose and Alexandra and Anna Reimer as Bridgette's son, Larry, named after Boston Celtics legend Larry Bird.

Frankie Shaw is a Boston-born writer, actress, director and producer currently based in Los Angeles. SMILF is based off Shaw's award-winning Sundance short of the same name, which won the Sundance Jury Award in 2015. Shaw also wrote and directed the 2016 short Too Legit starring Zoe Kravitz, which premiered at Sundance in 2016. Shaw also recently starred in the feature film Stronger directed by David Gordon Green and starring Jake Gyllenhaal and the Amazon Studios series Good Girls Revolt.

Related: SMILF Creator Frankie Shaw Accused of Misconduct On Set

Season one guest stars include Emmy and Golden Globe nominee Connie Britton as Ally, Marc Webber as Father Eddie and Raven Goodwin as Eliza. Shaw wrote and directed the pilot. Executive producing alongside Shaw are Oscar nominee Michael London, Lee Eisenberg and Scott King. SMILF is produced by ABC Signature Studios as a co-production with Showtime. For more information about SMILF, go to SHO.com and follow on Twitter, Instagram and Facebook.