Keep your tissues ready, Kardashian fans.
"We should really appreciate all the things that she does for us because she does a lot," said Kardashian to sisters Kylie and Kendall Jenner while fighting back tears.
In the upcoming two-part special, which producer Ryan Seacrest calls "extremely emotional and very, very raw," Bruce Jenner reportedly "talks to his family about everything."
In April, the 65-year-old came out as transgender in an interview with Diane Sawyer, saying, "I'm me. I'm a person. This is who I am."
"KUWTK: About Bruce" airs May 17 and 18 at 9:00 p.m. ET on E!