Lennon co-created and starred in her own half-hour USA series, Playing House, which just concluded after 3 critically acclaimed seasons. She also recurred as Julia Louis-Dreyfus' hilarious Senior Advisor, "Karen Collins," whose specialized field was "common sense" on HBO's Veep. Additionally, Lennon has made a number of memorable appearances on television including Fox's Ghosted, Netflix's Lady Dynamite, AMC's Mad Men and NBC's Parks and Recreation. On the feature side, she also had flashy supporting roles in Horrible Bosses 2, Confessions of a Shopaholic and Other People.
Frequent collaborator with Jessica St. Clair on TV. In real life, they are best friends. Both were married in July 2006 within one week of each other's nuptials and gave birth to their daughters within five months of each other in 2013.