But the reason is super cute.
Khloé Kardashian confirmed two weeks ago that she and boyfriend Tristan Thompson are expecting their first baby together.
And now that the news is official, Khloé has been sharing all the details of her pregnancy.
The Ellen Show
In fact, during an appearance on Jimmy Kimmel Live, Khloé even spoke about the moment she found out she was pregnant.
Tristan kept saying: “You're pregnant,” because I was nauseous and not feeling well. But then he had to leave the country and I took a pregnancy test. I was screaming, it was so surreal. I had my trusty assistant [buy the test,] so Alexa my assistant, Tristan and I were the only ones that knew for a few weeks until I was able to tell my family.
She went on to reveal that she actually told the Keeping Up With The Kardashians crew before her family, so they could capture the moment she announced the news.
Because Tristan was out of the country, we wanted to wait to tell everybody together. It's actually all caught on Keeping Up, which I'm excited about because my family get to see all the stuff I was going through without them knowing. I told the crew before them, but I've known the crew since 2007. We've had pretty much the same crew and they've been involved in the best and worst times of our lives, and they keep quiet.
However, since her family found out, Khloé has been inundated with advice which has led to uncharacteristic fights between her and Kourtney.
Kourtney gives a lot of advice, but I don't want to do some of that stuff. She's like: “You can never have a plastic toy, ever!” I'm like: “If someone buys fucking blocks, I'm allowed to have blocks.” Let me experience things. It's either her way or no way. We've been fighting a lot lately and we never fight.
Let’s hope they make it up in time for the new arrival!
You can watch the full video here.