Kylie Jenner is pregnant with her first child.

TMZ said the reality television personality and model, 20, and 25-year-old rapper Travis Scott are expecting a daughter.

People magazine reported Jenner is due to deliver the baby in February.

"They started telling friends a few weeks ago," the publication quoted an unnamed source as saying.

"The family has known for quite some time. She is REALLY excited and so is Travis!"

The pair have been dating since April.

Jenner is the daughter of Kris and Bruce Jenner [now Caitlyn Jenner]. She is also the sister of Kendall Jenner and half-sister of Kim, Khloe and Kourtney Kardashian.