Fans have gone wild after a video was posted where the makeup mogul reveals she is expecting.
The video taken at sister Khloe Kardashian's 35th birthday bash on Thursday.
The 21-year-old mother-of-one is heard saying 'I'm pregnant!' as the camera focuses on a tray of doughnuts.
The reality-TV star is already a mother to Stormi with rapper Travis Scott.
Jenner kept her first pregnancy a secret until days after Stormi, now 16 months, was born.
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