Kylie Jenner's pregnancy had been kept under wraps until she gave birth to her daughter Stormi last February. Even fans were shocked by the revelation.

In the promo for the newest episode of Keeping Up With The Kardashians, her family finally discussed keeping their family on the down low.

"Kylie is about to have her baby and it's pretty crazy that it really hasn't been confirmed. So I don't want to be the one with the info, or getting blamed for someone finding out the secret," said her sister Kourtney Kardashian.

Kylie Jenner's Secret Pregnancy

According to Kris Jenner, Kylie's pregnancy caused her anxiety. Tons of people were telling her that they were going to announce it. Fortunately, the family was able to keep it a secret and became a positive experience for her.

Kim Kardashian also said her disbelief about Kylie getting out of the hospital without being spotted by the paparazzi. She added that because they pulled it off, Caitlyn Jenner cannot claim that they leaked everything.

Best-Kept Secret Of The Kardashians

Furthermore, Kim and Khloe revealed that their secret was almost busted by TMZ. During Kylie's pregnancy, a photo of her wearing baggy clothes while walking through a site with her best friend, Jordyn Woods, and Kris Jenner became viral on the internet.

"The funnest game ever is the Kylie Pregnancy Game just to see what people think," her famous sister Kim said. "Like, there were pictures of her out on TMZ and she looked so skinny."

Khloe said that if the paparazzi got a picture of her from the side, it would have let her secret out. If so, all of the months of avoiding the press and wearing loose-fitting clothes would have been in vain.

Kim even said that Kylie's pregnancy is the best-kept secret of their generation. Additionally, Kylie insisted that she was not trying to keep it a secret. Rather, she just wanted to keep the experience for herself.

Kim also thanked Kylie's friends and said that they deserve awards. She also raved about Kylie's friends being loyal and stated that it would never have happened to her before.

Since Kylie gave birth to Stormi Webster with Travis Scott, she has been open about her journey and her new life as a mother. She even released an emotional video titled To Our Daughter, documenting her pregnancy. Despite this, not one video or photo of Kylie or her partner were leaked before Stormi was born.