Kristen Johnston | |
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Role | Tammy Diffendorf |
Season(s) | S5 - S6 - S7 - S8 |
Date of Birth | September 20, 1967 (age 57) |
Origin | Washington, D.C., USA |
IMDb profile |
Kristen Angela Johnston (born September 20, 1967) is an American actress. She portrays Tammy Diffendorf in the CBS sitcom Mom.