Allison Janney opened up about her relationship with 'The West Wing' costar Bradley Whitford. She told PEOPLE he's 'family to' her. The pair are set to reunite on 'The Diplomat.' ...

Allison Janney: My first conversation was with Debora Cahn [creator and executive producer], who I knew from my West Wing days.

Steve Schapiro/NBCU Photo Bank/Getty The cast of 'The West Wing.' From left: Martin Sheen, Richard Schiff, Allison Janney, Bradley Whitford, Moira Kelly, John Spencer and Rob Lowe in 1999 ...

NEED TO KNOW Allison Janney opened up to PEOPLE about her bond with The West Wing costar Bradley Whitford The Emmy winner said the actor is ‘family’ to her, two decades after the series ended ...

NEED TO KNOW Allison Janney opened up to PEOPLE about her bond with The West Wing costar Bradley Whitford The Emmy winner said the actor is ‘family’ to her, two decades after the series ended Janney ...

Allison Janney and Bradley Whitford in ‘The West Wing’ reunion for ‘The Diplomat’ season three trailer The Emmy winners play husband and wife in the political thriller By Victoria Luxford ...

The cast of 'The West Wing.' From left: Martin Sheen, Richard Schiff, Allison Janney, Bradley Whitford, Moira Kelly, John Spencer and Rob Lowe in 1999 ...

Bradley Whitford and Allison Janney are reuniting on screen for season 3 of 'The Diplomat,' arriving on Netflix this fall. Plus, 'The Marvelous Mrs. Maisel' star Rachel Brosnahan makes her TV ...