The reality star's older sister Khloe, 37, hosted the party at her new $37million Hidden Hills mansion, the publication revealed.
The bash was reportedly low-key, as only the TV personality's siblings, nieces, nephews, and close pals were invited.
According to TMZ, Khloe provided a massage station, various treats for guests, and tents covering the dining area for privacy.
BABY ON THE WAY Kylie's due date has remained undisclosed throughout her pregnancy, although she was already several months along when she first announced the news back in August.
The Kylie Cosmetics founder and her boyfriend Travis Scott, who already share their three-year-old daughter Stormi, have yet to reveal the gender of the child.
The young mother has been more transparent about her pregnancy this time around, after previously hiding the news of her daughter for the entire nine months.
However, after Travis's Astroworld festival on the first weekend of November, Kylie has stayed silent on social media.
The makeup mogul ditched her usual thirst traps and sexy selfies for rare glimpses at her holiday decor.
CHRISTMAS SPIRIT Earlier this month, the E! star shared a photo of an Elf on the Shelf figure resting inside of a hot air balloon decoration hanging from the fireplace.
The fireplace was decked out in pine garland, while a white stocking with the star’s name also hung from the fireplace ledge.
The following Instagram Story snap captured numerous gingerbread cookies individually wrapped with white bows.
Kylie hinted that the cookies were from her mom, Kris Jenner, by tagging the family matriarch.
DEVASTATING TRAGEDY During Travis' set at the Astroworld concert last month, 10 people died and hundreds were injured as a stampede rushed toward the stage.
Kylie and her famous family received backlash following the tragedy, leading her to delay the launch of her holiday makeup line.
The multi-millionaire has reportedly been hiding out away in her mansion and has been quiet on social media after the multiple fatality event.
FAMILY COMPOUND During her social media hiatus, Kylie has been working on a new family home on a $15million plot of land closer to mom Kris and sister Khloe.
The Sun exclusively reported that Kylie purchased the five-acre vacant lot in cash in May 2020.
STILL TOGETHER? In addition to the drama surrounding the Astroworld tragedy, fans have wondered if the famous couple called off their romance.
The speculation heightened when a W Magazine writer claimed the duo haven't been together for two years .
Kylie and Travis posed for W Magazine with their daughter Stormi, three, but decided to scrap the piece in the wake of the Astroworld incident.
However, Khloe took to the social media platform to shut down the split allegations.
The Good American founder commented on the TikTok user's clip: "Wow I don't know why this magazine would write this but they are very much a couple."
Kylie could welcome her child before the end of the year Credit: Instagram @kyliejenner 10 people died after Travis Scott's Astroworld in November Credit: AP Fans speculated that the couple broke up after the tragedy Credit: AP
Kylie Jenner breaks weeks-long silence after Astroworld tragedy to promote her fashion brand with sister Kendall