The cat is finally out of the bag and the Kardashian family is not ignoring the big elephant in the room when Bruce Jenner decides to finally reveal his real sexual orientation and his desire to transition to become a woman.

A two-part 'Keeping Up With the Kardashians' special is set to air on E! this Monday night and ahead of its airing, fans get a glimpse on how emotional it's going to be through the promotional clips of the episode, reports Daily Mail.

Appropriately titled "About Bruce," the special is set to take all fans to that moment Bruce finally decides to come clean of his transition to his family, especially to his daughters, Kylie and Kendall.

In the upcoming episode, Khloe Kardashian will ask Bruce about his future plans, and this immediately prompts Bruce to reveal his big plan to become a woman.

"We knew Bruce was a cross-dresser but we were never told he was going to fully transition and become a woman," Khloe says in one of the promotional clips.

One of the teasers also shows Bruce telling Kendall, Khloe and Kylie about his female identity taking over his body for the time being.

"'Bruce' will be gone [in a couple months] and his new female identity will replace him," Bruce tells the girls in the snippet.

While Kylie was obviously left stunned and speechless after hearing her father's words, Kendall managed to open up and share that she already has an idea on what's going on with their father, E! Online has learned.

"I just remember being little and not really knowing what was going on," Kendall says. "[Kylie and I] would find things like makeup or lipstick, and we thought he was having an affair at one point. And we didn't know what to do, we didn't want our family to be broken up."

The young model then went on to reveal a very confusing moment during her childhood when she caught her father dressing up as a woman.

"I woke up to go and get water and I came down the stairs and went into the kitchen and I saw him...and I just backed up and I ran up the stairs quietly and I went to bed," Kendall reveals.

Check out the video below where Kendall further gushes about having the best dad in the world amid Bruce's decision to become a woman.