Stormi “has her own office where she does all her business,” said the reality star, one of the family known simply as the Kardashians.
During a three-part documentary broadcast on YouTube, the 23-year-old also said she wants her girl to be surrounded by “strong women”.
Stormi is the daughter of Kylie and rapper Travis Scott.
“I think for me and my mom and my team it was something I had to do, to be around strong women,” she added.
The documentary series discusses the transformation of the young celebrity's company, from selling lipstick sets to a cosmetics empire.
Over the years, Kylie said, she has taken Stormi to work. In the documentary, the girl appears playing in her room, interacting with workers and sitting on her mother's lap during a meeting.
“Thank God I have the best team in the world to help me see it,” she said.
Kris Jenner, Kylie's mother, said her granddaughter “just soaks it up” at work.
“Kylie is going to work with Stormi and Stormi loves it,” Kris recounted.
Her youngest daughter, Kris added, is a “very patient” mother.
“She brings me so much joy. See her with Stormi. I've never seen anything like it," said Kris, 65. "She can be in the middle of the most important thing in her life right now, and if Stormi walks into the room and says, 'Mom, I need you,' she'll stop what she's doing and put her full attention on her daughter."
“Stormi is my legacy. I'm raising her so she's smart and kind and driven. Maybe she'll take the reins at Kylie Cosmetics one day? Only if that's what you want to do," he said.
Kylie has said that becoming a mother was the biggest change of her life.
“I have grown so much as a person and I continue to grow every day. I love learning and I'm trying to be the best person I can be,” she pointed out.
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