Kim Kardashian opened up about the fateful day she discovered her then-stepdad Bruce Jenner’s secret that he identified as a woman over a decade ago during an interview with Rolling Stone.

As Bruce explained during his groundbreaking Diane Sawyer interview before becoming Caitlyn, Kardashian walked in on him wearing women’s clothing 12 years ago.

"I was shaking. I didn't know if I'd just found out his deepest, darkest secret, and he was going to come after me," she told Rolling Stone.

She left the house and they eventually talked on the phone after it happened. She recalled him telling her, "One day, I'll talk to you about this."

That’s now in the past as Caitlyn’s family has wholeheartedly accepted her and she has come out publicly as a woman to the world.

Caitlyn is currently filming her E! docu-series I Am Cait and has been seen out in NYC this week enjoying herself as the person she was always meant to be.

image via INFphoto.com