The big reveal was not Kylie's pregnancy, however, but Khloe's.
In the episode, Khloe and her boyfriend, Tristan Thompson, told their family and friends that they were expecting their first child together during a barbecue, but because Kylie and Kendall Jenner couldn't attend, Khloe decided to FaceTime them.
"Well, you missed the barbecue, and I really wanted to tell you something," the Good American designer told Kylie, who very quickly responded, "Are you pregnant?"
When Khloe confirmed the good news, Kylie sweetly responded, "Are you kidding? Because I'm going to cry!"
"That makes me happy! I'm so happy for you!" she added after Khloe told her not to cry.
Later on, Khloe and Kim even giggle over the fact that they're both having babies at the same time. Kim is expecting her third child with husband Kanye West via surrogate, with the soon-to-be bundle of joy expected any day now.
"It's different that we're doing it together," Khloe said, smiling.
After the episode, the Revenge Body host couldn't help but share how excited she was to not only have the secret off her chest, but that her major moment was documented.
"I'm SO happy we captured all this!! Such a blessing to have all of these memories forever! #KUWTK," she tweeted.
I'm SO happy we captured all this!! Such a blessing to have all of these memories forever! #KUWTK