But in contrast with sister Kylie Jenner's uber-low profile pregnancy, as the 33-year-old reality star gets into the final stretch, she's hardly stayed out of the public eye. From social media shares on maternity fitness and all the baby bump updates in between, keeping up with Khloe has been a fruitful endeavor.
Here's everything we've learned about her journey to parenthood.
We've known she was pregnant since late September.
"Everyone is thrilled," a source told ET. "It's no secret that Khloe was eager to become a mother. This is something she has wanted for a long time and, finally, the timing is right."
The news, of course, came as no surprise to KUWTK fans, who saw a June episode where Khloe revealed that her Tristan -- who she'd been romantically linked to since 2016, was looking to start a family with her.
"He wants to have kids now," Khloe explained. "He said, 'I want to have kids with you, [and] if you get pregnant, you could make maternity jeans for [your clothing line] Good American."
"He's so f**king cute and supportive and sweet. I've just never had that," she continued. "He's such a nice, nice, nice person."
In October, a source told ET that the couple was expecting a baby boy.
How she told her family.
It was revealed in the two-part midseason premiere of KUWTK in January that Khloe and Tristan shared the baby news with her family at a barbecue, before Facetiming sisters Kendall Jenner and Kylie, who couldn't be present on the occasion.
"Well, you missed the barbecue, and I really wanted to tell you something," she told Kylie. "Are you pregnant?"
"Are you kidding? Because I'm going to cry!" she added. "That makes me happy! I'm so happy for you!"
"I'm SO happy we captured all this!! Such a blessing to have all of these memories forever!" Khloe said of the episode. And interestingly, the on-camera reveal meant her family was technically the second to know -- after the KUWTK cast and crew!
"I've known the crew since 2007, we've had pretty much essentially the same crew," she explained on Jimmy Kimmel Live! in early January. "They've been involved in pretty much the best and worst of our lives, and they keep quiet."
She broke the news to the public in late December.
While it had been widely reported for months, Khloe officially confirmed her baby news on Dec. 20 with an emotionally-captioned baby bump reveal on Instagram, where the reality star raved about her co-parent-to-be, Tristan.
"My greatest dream realized! We are having a baby! I had been waiting and wondering but God had a plan all along. He knew what He was doing. I simply had to trust in Him and be patient. I still at times can't believe that our love created life!" Khloe wrote. "Tristan, thank you for loving me the way that you do! Thank you for treating me like a Queen! Thank you for making me feel beautiful at all stages! Tristan, most of all, Thank you for making me a MOMMY!!! You have made this experience even more magical than I could have envisioned! I will never forget how wonderful you've been to me during this time! Thank you for making me so happy my love!"
"Thank you to everyone for the love and positive vibes! I know we've been keeping this quiet but we wanted to enjoy this between our family and close friends as long as we could privately," she added. "To enjoy our first precious moments just us ❤️ Thank you all for understanding. I am so thankful, excited, nervous, eager, overjoyed and scared all in one! But it's the best bundle of feelings I've ever felt in my life! ❤️❤️❤️."
In January, Khloe shared on her website how she managed to conceal her bump for so long. One style staple? A "billowy coat."
"I almost never left home without one!" she said of the outerwear. "So comfy -- and zero eyes on the bump."
After Khloe made the baby announcement, Tristan expressed his devotion to his lady love in the comments
"Thank you for allowing me to be a part of your journey and entering your life that day at the Bel Air Hotel. One of the best moments in my life," the 26-year-old basketball pro began. "I'm soo happy to be on this journey together with you and creating this angel from the man above. Every day I give thanks to him for bring[ing] us together."
"I love you soo much and I know our little angel feels the love we share together and will know that mommy and daddy loves them unconditional forever and ever amen," he added.
“For six months [pregnant], you a fine six months, baby. I’ll tell you that," Tristan flirted in a sweet Snapchat video from the couple's New Year's Eve night out in Ohio, where he plays for the Cleveland Cavaliers.
Khloe is embracing the third trimester of her pregnancy, which she opened up about on her app.
“I heard later in your third trimester you go through a stage called 'nesting,' where you just want to clean and organize everything. My sisters said I would love that, LOL," she wrote. "So I am actually looking forward to it. I just want everything organized and planned and as perfect as possible before the baby comes.”
Tristan plans to be a hands-on parent.
Khloe and her beau have taken planes, (probably not) trains and automobiles to be together as he plays professionally for the Cavs, and she spent much of the holidays in Ohio to accommodate his basketball schedule.However, in January, a source told ET that the NBA player is considering moving to Los Angeles to be closer to Khloe and her close-knit family.
Either way, Tristan, who is also a father to a 1-year-old son, Prince, from a previous relationship, plans to be very involved in his second child's life.
"Tristan is going to be 100 percent hands-on," the source said. "And there's a chance he may come play for the Clippers."
"Her family and support network is in L.A. It's her first baby, and she's going to want the support of her sisters and [mom] Kris," the source added.
Khloe and Tristan have been super adorable -- and packed on the PDA.
Khloe has not been shy about sharing her workout regimen while pregnant. While some have criticized the reality star for it, she retorted on Twitter in January, "For the ones who think they are physicians all of a sudden but MY doctor and I communicate and my workouts are cleared and highly recommended."
She reiterated a similar sentiment during a sit-down interview with ET at the beginning of the year.
"It's bizarre to me that people don't want me to be happy and stay healthy and fit," she admitted. "My doctor wants me to work out every day if I could, so I'm doing doctor's orders and I feel good."
Some of that fitness involves workouts with her big sister, Kourtney Kardashian, who took to the gym with her late last year, as documented on Khloe's snaps.
"For me, health and wellness resolutions are especially important this year. Being pregnant, it's a whole different type of self-care," Khloe shared on her website. "I still exercise to maintain my sanity and also to feel good about myself, but my workouts are not as intense as they once were. I'm also eating differently because, of course, I have cravings, but I want to make sure I'm supplying my baby with the proper nutrients."
She's also dealing with all the normal pregnancy things -- from cravings to kicking!
Khloe's shared on her website that she is letting herself indulge during her pregnancy while being mindful of giving her baby what it needs.
"During my pregnancy, I'm obviously not beating myself up about what I'm eating at all," she said. "I'm more encouraged by how, after the baby comes, I'm going to work off every pound. I'm actually really excited to get my body back. I can't wait!"
With that said, she does miss some thing's about her pre-pregnancy physique.
"I now have cellulite on my legs! Cute! Cute! 'Pregnancy may make cellulite look worse for a while, because the weight that you gain in pregnancy could make it more noticeable,'" she tweeted recently. "I feel like I've always had cellulite but it's way more prominent at the moment."
I now have cellulite on my legs! Cute! Cute! "Pregnancy may make cellulite look worse for a while, because the weight that you gain in pregnancy could make it more noticeable."
While she seems pretty prepared in every other way, Khloe did share recently that one area she's still pretty unprepared for is naming her baby.
"Lol I can barely decide what I want to eat. Let alone name a baby," Khloe tweeted, but she does have some inspiration, if her feelings towards sister Kim Kardashian and brother-in-law Kanye West's third child, Chicago, is any indication.
"I LOOOOOOOOOOVE her name hey Chi (shy)," she tweeted in response to Kim's name reveal.
And about the paparazzi....
Really wish paparazzi would understand how hard flying is on my body right now. It's the only time I feel incredibly exhausted, swollen and nauseous. Screaming rude things and taking my picture when I already feel like crap I can really do without. At least be quite if you must
I love you guys! I know it comes with the territory and I hate when people complain about stuff like that. But while I'm pregnant I would love some boundaries with the paparazzi. I know it won't happen but here's to putting it in the universe.
Look, Khloe's a Kardashian. She's fully bought into everything that means. However, on Jan. 28, she did take to social media to level with some of those who have been photographing her, asking them to take some consideration of her current physical and mental state while she's expecting.
"Really wish paparazzi would understand how hard flying is on my body right now. It's the only time I feel incredibly exhausted, swollen and nauseous. Screaming rude things and taking my picture when I already feel like crap I can really do without. At least be [quiet] if you must," she tweeted.
"I love you guys! I know it comes with the territory and I hate when people complain about stuff like that," she clarified. "But while I'm pregnant I would love some boundaries with the paparazzi. I know it won't happen but here's to putting it in the universe."
Well, hopefully, Khloe can get the space she needs to prepare for a happy, healthy baby boy.
Watch the video below for more on Khloe's pregnancy.