Kristen Johnston studied acting at the Atlantic Theater Company Acting School in New York City. She won two Emmys for her role on 3rd Rock from the Sun (1996).

She has appeared on many other television shows, including Ugly Betty (2006), ER (1994), Bored to Death (2009) and, perhaps most memorably, as the party girl whose famous final words were "I'm so bored I could die" on Sex and the City (1998). She's currently, on television, on TV Land's hit series, The Exes (2011), which is now in its fourth season. Just a few of Johnston's many stage credits are "So Help Me God!" (Drama desk nomination), "The Women", "Aunt Dan & Lemon", "Love Song" on the West End, as well as starring in three "Shakespeare in Central Park" productions, "Much Ado About Nothing", "12th Night", and "The Skin of our Teeth".