Zosia Mamet and Lou Diamond Phillips to Guest Star on "You're the Worst"

The Critically Acclaimed Comedy Returns to FXX with a Special One-Hour Premiere on Wednesday, September 6 at 10 PM ET/PT

LOS ANGELES, August 9, 2017 - Zosia Mamet and Lou Diamond Phillips are set to appear in season 4 of the acclaimed FXX comedy You're the Worst, it was revealed today by creator / executive producer Stephen Falk during the Television Critics Association's summer session in Beverly Hills. Falk was joined on stage by YTW series stars Chris Geere, Aya Cash, Desmin Borges and Kether Donohue.

You're the Worst returns to FXX for its fourth season with a special one-hour premiere on Wednesday, September 6 at 10 PM ET/PT.

Zosia Mamet plays "Heidi," Gretchen's estranged best friend from childhood with whom she reconnects while back in her hometown, visiting her family. She will appear in episode 7 of the season, "Not a Great Bet."

Lou Diamond Phillips will appear as himself, in the role of a man who dated Lindsay and Becca's mother in the '90s and was a father-figure to them. Lindsay and Becca track him down in an attempt to find out why he abandoned their family. His appearance will be in episode 10, "Dad-Not-Dad."

You're the Worst is a modern look at love and happiness told through the eyes of two people who haven't been very successful with either. It's the story of Gretchen and Jimmy, fear, heartbreak, romance, sex, food, Los Angeles, Sunday Funday, friendship, and the fact that sometimes the worst people make the best partners.

An original comedy from writer and executive producer Stephen Falk, You're the Worst puts a dark twist on the romantic comedy genre. Narcissistic, brash, and stubborn Jimmy Shive-Overly (Chris Geere) has inadvertently found himself paired up with cynical, people-pleasing, and self-destructive Gretchen Cutler (Aya Cash). After a whirlwind courtship, and a very rough post-cohabitation period of dealing with Gretchen's clinical depression, Jimmy and Gretchen were forced to learn how to manage a relationship in the face of tragedy when Jimmy's father unexpectedly died. Ultimately, drawn closer, Jimmy proposed and then suddenly disappeared when confronted with the notion that Gretchen would be his family. Now broken up, and involved with other people, both struggle to move on while constantly being pulled back toward one another.

Rounding out the cast is Desmin Borges, who plays Edgar Quintero, Jimmy's once homeless war veteran roommate who, having recently learned to manage his PTSD, has gotten a new job and is navigating the world of television comedy writing; and Kether Donohue as Lindsay Jillian, Gretchen's best friend and former partner in crime who is recently divorced and taking her first steps toward life as a single, professional woman.

You're the Worst is produced by FX Productions.

About FXX

FXX is the newest basic cable entertainment network from FX Networks which launched on September 2, 2013. Geared towards a young adult audience, the schedule features original series, movies, and acquired series. The channel is anchored by the acclaimed hit comedies It's Always Sunny in Philadelphia, the Emmy(R) Award winning comedy series Archer, You're the Worst and the upcoming untitled Marvel's Deadpool animated comedy series. FXX is also the exclusive cable home to The Simpsons, the longest-running comedy in TV history. FXX is carried in 85 million homes. FXX and its sister channels FX and FXM comprise FX Networks, a business unit of 21st Century Fox.