She starred as divorce attorney Holly Franklin on The Exes, and as recovering addict Tammy Diffendorf on Mom. She has also appeared in the films Austin Powers: The Spy Who Shagged Me (1999), The …

Tammy Diffendorf is Bonnie's ex-foster sister and a main character on Mom. She is portrayed by Kristen Johnston. Tammy first appeared in Season 5's "Crazy Snakes and a Clog to the Head". In "Triple Dip …

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).

Discover the actors and actresses who bring to life the characters in Mom, the hilarious TV series about a newly sober single mom raising her children...

Sep 13, 2023 · The duo portrayed Bonnie Plunkett and Tammy Diffendorf, respectively, on the series. Although Janney’s Bonnie starred in all eight seasons, fans weren’t introduced to Johnston’s Tammy …

Dec 7, 2018 · Kristen Johnston is Tammy on the series Mom. She is the actress who has joined the show in Season 6 and has been hilarious on the show.

Dec 5, 2020 · One of the most popular supporting cast members on Mom is Kristen Johnston, who plays ex-con Tammy. While she's been getting more screen time, some fans are concerned about the …

When she returns to her old foster home where she lived with Bonnie, it is revealed that her father killed her mother and she went into the foster care system after that. In the Season 8 premiere, Tammy …

May 9, 2024 · It's a 'Mom' reunion! Kristen Johnston (fka Tammy) will co-star in a new Netflix comedy from executive producer Chuck Lorre — get details.

Mom (TV Series 2013–2021) - Cast and crew credits, including actors, actresses, directors, writers and more.