Hilty will play Liz, Sean’s long-time friend and co-worker who is a former therapist. She replaces Lindsay Sloane, who played the role in the pilot.
Hilty most recently played aspiring Broadway star Ivy Lynn on "Smash." Her stage credits include 9 to 5, Gentlemen Prefer Blondes and Wicked.
"Sean (Sean Hayes, 'Will & Grace') is a divorced gay dad who juggles a lot — his successful but demanding career, offbeat employees, pushy mom Lorna (Linda Lavin, 'Alice'), and weekends with his teenage daughter, Ellie (Sami Isler)," press notes state. "So when his 14-year-old bundle of joy moves in full-time, it's a whole new world. From keeping his boss happy, his employees motivated and enduring his mother's tactless 'advice' to raising a smart, grounded and healthy kid, it's going to be a growing experience, to say the least."