Mommy-daughter TMI? Kim Kardashian told her daughter, North West, about the night North was conceived.

During the Nov. 24 episode of Kim's Hulu series, The Kardashians, Kim and North visited fashion designer Olivier Rousteing in Paris, France. While there, the reality TV star-turned-mogul revealed the story of North's conception to the 9-year-old.

Kim alluded that Rousteing might have had "a little something to do" with North's very existence.

"Northie, I've known Olivier since before you were a baby. And he gave daddy this blue dress that daddy wanted for me. It was my birthday the year before you were born and I wore the dress, and I got pregnant and you got in my belly the night I wore that dress," Kim explained.

North took the story in stride, listening to her mother intently as she enjoyed her French fries.

Kardashian wore the blue dress to the Angel Ball on Oct. 22, 2012. See the dress below:

Angel Ball 2012
Steve Mack, Getty Images
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Kim and North's Paris vacation was a bonding trip for the mother and daughter, who share a love for fashion.

"I really wanted to bring North on this trip because I really enjoy what I do. And I want my kids to grow up really loving what they do and finding their passion and figuring out how to make a business out of that," Kim said during the episode.

The Kardashians airs new episodes Thursdays on Hulu.

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