Chlumsky appeared as Mary Calvin in a season 17 episode of "Law & Order", first airing on January 12, 2007; and as Lisa Klein in a season 20 episode, first airing on March 15, 2010. In March 2007, she appeared in the "30 Rock" episode "The Fighting Irish" as Liz Lemler, a romantic rival of protagonist Liz Lemon, who receives flowers meant for Lemler. Chlumsky was in four episodes of the ABC dramedy "Cupid" in 2009. Later that year, she starred in the Lifetime Television movie "12 Men of Christmas" as Jan Lucas.