Kylie Jenner is pregnant, and expecting her second baby with boyfriend/rapper Travis Scott.

Kylie inadvertently made the announcement last night, while on Instagram Live. The youngest Kardashian sister blurted out that she's "pregnant" with her expecting her second child in an Instagram video taken at sister Khloe Kardashian's 35th birthday bash.

In the clip posted on Khloe's social media page, a voice which sounds very much like the beauty mogul, 21, is heard exclaiming 'I'm pregnant!' as the camera pans across a doughnut tray.

The brunette beauty is already a mother to Stormi, 17 months, with rapper beau Travis Scott, 28, and has previously spoken openly about her desire to add to her family.

Here's the video:

Jenner gave birth to her first child Feb. 1 after keeping her pregnancy basically a secret for almost nine months, despite reports that surfaced claiming she and her rapper boyfriend were expecting.

She finally confirmed reports that she had indeed given birth Feb. 4, with an explanation on Instagram about why she needed to keep her pregnancy a secret.

Kylie is a media personality, model, businesswoman, and socialite. She has starred in the E! reality television series Keeping Up with the Kardashians since 2007 and is the founder and owner of cosmetic company Kylie Cosmetics.

According to Forbes magazine, Kylie's net worth is estimated at US$1 billion, making her, at age 21, the world's youngest billionaire as of March 2019. In November 2018, New York Post credited her for being the most influential celebrity in the fashion industry.