The reality star, 20, and her boyfriend Travis Scott are expecting their first child together. 

Travis Scott and Kylie Jenner
Credit: Bob Levey/Getty Images

Kylie Jenner is going to be a mom! The 20-year-old reality star and beauty mogul is expecting her first child with her boyfriend, rapper Travis Scott (originally born Jacques Webster, Jr.), multiple sources tell People. Jenner's reportedly due in February.

“They started telling friends a few weeks ago,” a source tells the outlet. “The family has known for quite some time. She is REALLY excited and so is Travis!”

Meanwhile, another source close to the family confirms just how psyched Jenner is about becoming a mom: "It is an unexpected but completely amazing turn of events that she could not be more excited or thrilled about. ... Everyone is overjoyed for her. This is the happiest she’s ever been.”

Reps for Jenner and Scott -- who have been dating since earlier this year after Jenner split with longtime on-and-off-again boyfriend Tyga -- have yet to comment.

That said, one thing's for sure: Thanks to big sisters-turned-seasoned mamas Kourtney and Kim, Kylie will certainly have plenty of pregnancy and parenting wisdom at her disposal. And surely, Kris and Caitlyn are pumped to become grandparents once again. Congrats to the happy couple!

UPDATE: After nine months or speculating, Kylie Jenner finally returned to social media to announce the birth of her baby girl, Stormi, on February 1st. The reality-TV star took to Instagram to say that she is "sorry" for keeping fans "in the dark," but she didn't want to experience her pregnancy "in front of the world." She consciously chose to spend the past nine months "in the most positive, stress-free, and healthy way" she knew how, which meant keeping the news under wraps. The baby's father, Travis Scott acknowledged the arrival of his firstborn via Twitter writing, "2.1.18   4 ever   New rager in town.!!!