The 43-year-old American actress talks so much about the matriarch that she feels she is stalking her, reported People magazine.
"I think we all have Kris Jenner osmosis, so it's not too hard. She's a part of all of our lives somehow. It makes me sound so creepy, because I gush about Kris all the time and it sounds like I'm stalking (her)," Blair said.
"But people have been asking me, so it's not like I'm just volunteering my undying love for Kris," she added.
"I genuinely think that they're a family that loves each other, and I find them to be very comforting TV. I think the whole family has changed the face of Earth."
"American Crime Story" is FX's new anthology series, whose first season will focus on the OJ Simpson murder trial.