Gillian Vigman is an American actress. She debuted in an episode of the show Cupid in 1998. In the 2000s, she got her first regular work on the sketch comedy series Mad TV. She then starred as Liz Walker on the short-lived series Sons & Daughters. She next appeared in the films Deck the Halls and Step Brothers. She later landed the role of Stephanie Wenneck in the comedy film The Hangover. She reprised her role in the sequels The Hangover Part II and The Hangover Part III. In the 2010s, she had recurring parts as Jessica Morelli on The Defenders, Jill Werner on Suburgatory, and as Kim on New Girl. Her most recent work on the big screen was in 2018’s Forever My Girl.