Kylie reportedly checked into a hospital earlier this week.
Kylie was admitted into a hospital in Los Angeles, California, after feeling sick for a few days. A source told TMZ that she has been battling an illness that has flu-like symptoms, like nausea and dizziness.
She was set to present at the Emmys on Sunday.
Kylie's older sisters, Kim Kardashian and Kendall Jenner, took the stage to present an award at the Emmys on Sunday, September 22. The makeup mogul was also set to appear with them during the award show but didn't make it because she was too sick.
The health scare comes at a big moment in Kylie's career.
The reality star was set to launch a makeup collection with Balmain's designer, Olivier Rousteing. It will still be launching this week, but Kylie being in the hospital affected the way they planned to celebrate the collection with the high-end designer.
Kylie's people are in Paris taking her place while she recovers at home.
Kylie sent her assistant Victoria Villarroel and best friend Anastasia “Stassie” Karanikolaou to France to take her place, and her mom, Kris Jenner, is also there to make sure the fashion show and the cosmetics launch goes on successfully. Sources told TMZ that her dad, Caitlyn Jenner, has been checking in on Kylie in the hospital and that she is getting treated for her condition, even though that has yet to be revealed.