It's going to be the biggest story of 2019. Kim Kardashian and Kanye West have finally announced that baby #4 is on the way, and yes, the news much broke the internet.

In 2018, Kylie Jenner threw the world the biggest surprise ever with the arrival of Stormi Webster. That announcement alone received a record-breaking 16 million Instagram likes. Stormi was then joined by two other Kardashian babies. Khloe became a mom to True, while Kim and Kanye West bumped their family up to five with Chicago.

The fourth KimYe baby follows the surrogacy route that Kim took in 2017. With advice from doctors to stay away from carrying a child herself due to medical issues, Kim and Kanye used a surrogate for Chicago. Kim even admitted that she feared the surrogate's identity being revealed (she wanted to keep the pregnancy as relaxed as possible).

What does the world know so far? In some ways, a lot. In many ways though, there's still so much to find out. May 2019 is when the baby is due. Obviously, we won't be seeing a bump from Kim. For the moment, magazines and newspapers are full of rumors, questions, and the same nosy questions that everyone has on the tip of their tongue.

Kim and Kanye are officially expecting. Here are 12 things we already know about the fourth Kardashian baby (plus 8 we're still waiting to find out).

20 IT'S A BOY

It's the most important info there is (and we're lucky we've been told). The Kardashians might be super open about their lives via Keeping Up With The Kardashians, but let's just remember how much secrecy 2017 threw us. Kylie Jenner disappeared off the face of the earth before presenting Stormi– Kylie had her reasons, though.

With a "male embryo" left, The Daily Mail has confirmed that the fourth Kardashian baby will be a boy. Kim and Kanye currently have two girls (North and Chicago) and one boy (Saint). In a pretty perfect stroke of luck, this works out at two of each.

19 LAST TIME'S SURROGATE WAS ALREADY PREGNANT, WHO IS THIS ONE?

In 2018, Kim and Kanye welcomed their baby girl, Chicago. While they did their best to keep the surrogate out of the media, we did get a sneak peek of her meeting the family on KUWTK. La'Reina Haynes is the stay-at-home mom of two who carried KimYe's third child.

Kim's last surrogate, La'Reina Haynes is "pregnant with her own child," so Kim has chosen someone else.

Just recently, Harper's Bazaar reported that the surrogate Kim and Kanye picked for Chicago is pregnant with her own baby. What we don't know, is who she is. People reports that she is a "local person."

18 KIM ONLY HAD "ONE EMBRYO LEFT"

Fertility isn't something to take for granted– no matter how old you are. Season 15 of KUWTK showed us a nervous Kourtney at the doctor's as she began the process of freezing her eggs at 39. Kourtney was visibly upset by how few follicles the scan showed.

Kim and Kanye are said to have only had "one embryo left," E! News reports. The chances of successfully implanting embryos from Petri dish to uterus aren't a given. A lot of things can go wrong. With just one embryo left, it could well be that this was Kim and Kanye's last shot. They must feel so blessed that it worked.

17 SHE'LL NEVER BE ABLE TO CARRY ANOTHER CHILD HERSELF

It's been a long road for Kim. With the medical condition, Placenta Accreta, Kim has been strongly advised by doctors to never carry a child again. This condition sees the placenta attach itself deeply into the uterus wall, and the mom can't pass it out naturally. Severe bleeding can be very dangerous, here.

"I would go to the doctor in Beverly Hills every day at five in the morning to get tested to see if I was ovulating. I was trying everything."

Kim has spoken out about her previous frustrations with fertility, as Bustle reports. Fortunately, Kim bonded with Chicago "right away" despite the surrogacy, Hollywood Life reports.

16 KIM ALWAYS WANTED FOUR KIDS: "I DON'T THINK SIX"

Kim might seem flustered when it comes to picking between the zillion Yeezy outfits on her shoots, but she knows to focus her attention on the important things. Speaking on The Ellen Show in 2014, Kim revealed that she wanted a total of four kids.

"I'm going to do two and see how it is," Kim said at first. At the time, her only child was North. When Ellen suggested more though, Kim warmed to the idea. "I don't think six," Kim said. "Three. Maybe four– I go back and forth." Given Kanye's views though, this couple might find themselves a bit stumped...

15 BUT KANYE WANTS SEVEN: "HE'S STUCK ON, LIKE, SEVEN"

Kanye West is a man who knows what he wants. Whether it's perfecting his beats or tailoring his Yeezy, nothing in Kanye's world happens without his input. 2018 saw a freaked-out Kim share her worries to BFF, Larsa Pippen on KUWTK.

"He wants, like seven. He's stuck on seven," Kim revealed. She added: "He's been harassing me." While you can read that and interpret it in a negative way, you might want to bear in mind the love that Kanye has for his kids. After having North, Kanye said that he'd "have a million." Sure, the words might be exaggerated, but the emotion is all there.

14 BABY DUE IN MAY, SURROGATE IS "WELL INTO THE PREGNANCY"

Chicago was born on January 15th, 2018. This means that her younger brother will be a little over a year younger than her. While it's quite common to see this age gap, remember that this family will be bumped up to six.

"The surrogate is well into the pregnancy. She's due in May and everything looks good. Kim and Kanye have known a while and are very excited,"

E Online reports. Kim is used to keeping her cards close to her chest. The entire family knew about Kylie's pregnancy, but they all kept quiet. Prepare for an internet explosion in May 2019.

13 KANYE LIKES NAMES "SHORT AND EASY TO SPELL," WILL THIS BABY FOLLOW?

Look at the Kardashian baby names, and you'll notice something interesting. First of all, they're "out there" names. While Kim admitted to considering Easton for North, the couple settled on North– Kim explained to Kris that it's "the highest point." Saint joins North in being one syllable, while Chicago adds on two more.

"Short, easy-to-spell, that kind of vibe," Khloe told Ellen DeGeneres about the family's opinions on baby names. While Chicago breaks the pattern, she does follow one more– none of the Kardashian kids have middle names. We definitely don't know yet, but will the next baby follow the rules?

12 KHLOE PICKED KIM AS TRUE'S GUARDIAN, WHO WILL KIM PICK?

Talk about a tense moment. In 2018, Khloe became a mom to True. Fans saw Khloe sit two of her sisters down to discuss who she'd be picking to be True's legal guardian (should the worst happen). Kourtney and Kim were both candidates.

"I always thought Kourtney would be the godparent of my child, but lately I've been watching Kimberly and she's been someone I really gravitate to as a mom. So it's a tough choice between Kourtney and Kim," Khloe said. She had to make a decision, though (and she picked Kim). Khloe really "respects" Kim's parenting skills. So. Who will Kim pick for this baby?

11 HOW WILL KYLIE FEEL ABOUT NO LONGER BEING "THE LATEST MOM?"

"Life-changing." That was Kylie's summary of her 2018 on the season finale of KUWTK. With her 180 from spoiled teenager to hands-on mom, Kylie has undergone more change than we could have ever imagined. While Khloe gave birth after Kylie, there's still a"new mom on the block" feel for the youngest KarJenner. Everyone is still talking about Stormi.

Kylie has posted videos of a babbling Stormi holding Kylie Cosmetics kits. The selfies now come with Stormi in one arm. Kylie isn't one to take lightly to being knocked off her pedestal. With the arrival of this baby in May 2019 though, Kylie will officially no longer be the "new mom." Thoughts?

10 WE KNOW THE LAST SURROGATE COST $68,000 (WITHOUT SECURITY OR NUTRITIONISTS)

The Kardashians don't scrimp on cost. You see it in the Rolls Royce cars they drive, the custom Versace they wear, and the $20 million Kim and Kanye spent on refurbishing their Bel Air mansion, so The Daily Mail reports. The base pay for Chicago's surrogate may seem low, but there were extras.

Including agency fees, La'Reina Haynes cost Kim and Kanye $68,000. With strict nutrition rules and security though, the total bill was likely way more.

The Metro reports that La'Reina was paid $4,500 per month in installments, plus agency fees. Rules included limited caffeine, no raw fish, and no cat litter handling.

9 WHY WEREN'T THE SISTERS CHOSEN FOR SURROGACY?

We do know that Kim considered Khloe to be a surrogate for her third baby. KUWTK showed us Kim asking her sister if she'd be up to the task, and Khloe responded saying that she'd be "honored" to do it. Khloe was, however, in a committed relationship with Tristan Thompson and keen to start a family of her own (which she did).

It'll likely be on future seasons of KUWTK that we'll see any mention of this, but we can't help but wonder. The Kardashian sisters are super-close. Kourtney has already aced three pregnancies. Kylie has been through it, too. Were the sisters even asked? And if so, how did they feel?

8 KIM WAS "HESITANT" ABOUT HAVING MORE KIDS: IT'S A "CRAZY WORLD"

Kim has a smart head on her shoulders. Everything from her KKW Beauty line to her selfie superstardom is a result of smart decisions, and we all know that smart decisions come from thinking stuff through. Complex reports Kim saying:

"I've been kind of hesitant about having more kids just because it literally keeps me up at night, thinking about how my kids will survive in a crazy world like this."

Kim said this after the March For Our Lives event reminded her of the violence in this world. "That's crazy," she said about having the seven children that Kanye wanted. "Especially in a world like this."

7 "MY TIME IS SPREAD REALLY THIN," HOW WILL SHE MANAGE?

If you think that's one, time-strapped mom, remember that she's only with two of her kids in this pic. In 2018, Kim treated North and Saint to a trip to Disneyland. Admittedly, Kim did look a little worn out.

Speaking to Elle, Kim said that four kids would "be her max." "My time is spread really thin," Kim said, adding: "And I think it's important that in all couples, the mom give the husband as much attention as the kids." Kim is running an empire. There's KUWTK, KKW Beauty, Kim Kardashian Hollywood, her appearances and promos, plus the Yeezy work. Amazingly, Kim manages to spend quality time with her family.

6 $10 MILLION NON-DISCLOSURES FOR THE CURRENT CLAN, WE CAN EXPECT MORE

Don't think you can just rock up to the Kardashian household and get through the door. With The Daily Mail's report of Kylie's electronic gates and metal detectors, this family is 100% focused on privacy.

"All guests must sign a $10 million confidentiality agreement and an NDA. If they don't sign the agreement, they can't see [Stormi]".

OK! was reporting on the extreme measures Kylie has been taking to keep Stormi away from the press. With Kylie's fears of "secret cameras being smuggled in," there's no denying that the KarJenners take precautions. Hollywood Life reports that Kim and Kanye also make their guests sign on the dotted line.

5 KIMYE WANTED THEIR FOURTH TO BE "CLOSE IN AGE" TO THE OTHERS

We all grew up with that kid, right? The one who was 11, but had siblings who were ten, nine, and seven. Having kids close together gets the "motherhood stage" out the way faster, but it's more work. E! reports that Kim and Kanye "love having their kids run around and be able to enjoy each other as siblings."

The source added that "they would want the fourth child to be close in age with the others." Well, we've definitely seen the #BabySquad work with Stormi, True, and Chicago. Taylor Swift better up her game. 2019's baby is gonna come with a bang.

4 DID KIM SECRETLY WANT A GIRL?

Possibly only topped by Kylie, Kim is still the girliest girl ever. Kim loves pinks, glittering gowns, designer brands, and makeup. "Momma, can we do a photo shoot together just me and you?" was a caption to 2018 pics of herself with North. Kim has a super-strong bond with all her kids– Chicago is called "Chi" for short.

Kim hasn't said anything about her preferences. Why? Probably because she's super-smart and knows that the media would rip her comments out of proportion. Still, with another boy on the way, we can't help but wonder. Did Kim secretly hope for a girl?

3 KANYE DIDN'T WANT NORTH ON THE SHOW, THINKS REALITY TV IS "TACKY"

Don't think for a second that the Kardashian kids just lounge around the pool all day. Seeing them run around a marbled mansion might give the impression of total freedom (but it comes with a #FullTimeJob). While KUWTK shows us all three kids, Kanye wasn't so keen at first.

"He doesn't want North on display." Kanye initially thought reality TV was "tacky."

The Daily Mail reported this back when North was seven months old. "Kim really wants to put North on the show," a source told Radar Online. Kanye, however, is reported to have said he'll be "happy when Kim is done with the show." Will this baby be on KUWTK?

2 KRIS JENNER HAS SAID IT'S A "FULL HOUSE," DOES SHE DISAPPROVE?

Kris Jenner currently has a whopping nine grandchildren. When Kris spoke at Khloe's 2018 baby shower on KUTWK, she said that the arrival of more Kardashian babies was "a blessing." Kris' words are few and far between regarding the upcoming baby, but she hasn't mentioned feeling blessed.

The night before the Golden Globes, Kris was approached by the British TV host, Mark Wright. Of course, he asked Kris about the baby news. "It's always a full house," was Kris' reply. It's unusual for Kris not to throw out a positive comment when it comes to babies. Is this 63-year-old grandma finding it a touch too much? Probably not, but you never know!

1 IT'LL BE THE BIGGEST BABY NAME OF 2019

Prepare for the internet to literally break at the seams the minute baby #4 gets a name. If you need a reminder why, remember that Kylie Jenner's Stormi announcement broke Instagram records. 16 million of us liked the adorable pic of Kylie clutching Stormi's finger.

The Kardashians can rack up millions of likes in a matter of hours. Kim and Kanye haven't hinted at what they'll name their baby, but we know one thing for sure. The announcement will be the biggest baby story of 2019.