Kylie Jenner has given birth to her first child with rapper Travis Scott.
News leaked in September that Jenner and Scott were expecting a child, though the Kardashian/Jenner family stayed tight-lipped about the pregnancy, often evading questions related to it.
But on Sunday, Jenner posted to Twitter saying her "beautiful and healthy baby girl arrived February 1st."
Jenner, 20, also apologized for keeping fans in the dark, and said "my pregnancy was one I chose not to do in front of the world."
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Scott tweeted the news as well:
2.1.18 4 ever New rager in town. !!!
And Jenner's mom, Kris, tweeted that she was "excited and thrilled."
God is SO good!! I am so excited and thrilled to welcome another precious baby girl to our beautiful, ever growing… https://t.co/GV0T0EDXiv
Kylie Jenner also posted an 11-minute video to YouTube called "To Our Daughter," which shows behind-the-scenes footage from throughout her pregnancy.
View this video on YouTube
In it, she's shown telling her friends and family the news, going to the doctor, and eating In-N-Out Burger for two. Finally, the baby is born, at 4:43 p.m. on February 1.