"First comes love, then comes marriage, then comes the baby in the baby carriage." 2019 might have changed traditions, but some things will always stay the same.

Yes, the "age gap" talk. It's like the universal girlie group chat. The minute a girl starts dating a guy, her besties will get together in a group, and the boyfriend analysis will begin. It generally starts with his age.

Kourtney Kardashian is older than Scott Disick. Khloe Kardashian is older than Tristan Thomspon. The sheer number of celeb baby mommas who are older than the dad is pretty staggering. At the same time, the #OtherWayAround is just as significant.

Beyonce and Jay-Z? Does anyone even consider their age gap? It's there. Likewise, Blake Lively and Ryan Reynolds. While some celeb couples (like Kim Kardashian and Kanye West) are relatively close in age, others are throwing the world the biggest age gaps around.

It's when a baby daddy is 20 years older than the mom that eyebrows start getting raised. The relationship can be rock-solid, but people will throw around question marks, regardless. Then again, some relationship age gaps have managed to stay completely under the radar.

Brad Pitt and Angelina Jolie. Chris Pratt and Anna Faris. Eddie Murphy and Paige Butcher. The list is just beginning. Here are eight celeb baby mommas who have younger baby daddies (plus 12 where the guy is way older).

20 KOURTNEY KARDASHIAN IS FOUR YEARS OLDER THAN SCOTT DISICK

Kourtney Kardashian is this close to being out-done as the time-strapped Kardashian mom. With Kim and Kanye expecting their fourth, Kourt is one baby behind, but she's still the "OG." Despite that 20-something face, Kourtney is actually 39 years old. Scott is 35.

“So Scott just texts me that he wants to have another baby with Kourtney."

Kim's KUTWK reveal in 2018 brought us some pretty interesting news. Scott is dating Sofia Richie, but Kim's words hinted that Scott and Kourt might not be done. Kim even suggested IVF for Kourt and Scott (but it's probably an unlikely one). Together, Scott and Kourtney have three kids.

19 CHRIS PRATT IS 39 (BUT ANNA FARIS IS 42)

Chris Pratt has been making pretty major headlines with his new engagement to Katherine Schwarzenegger. This sitcom-star-turned-superhero-icon looked pretty different back on Parks and Recreation, but the charm was all there. Chris and Anna Faris called time on their marriage in 2018.

Together, this former couple are parents to a son, Jack. “Chris and I work really hard ‘cause we have Jack; that is sort of the long game idea and making sure Jack is really happy, which makes us really happy,” Anna told Us Weekly in 2019. Chris is 39, but his baby momma is actually 42.

18 BRAD PITT IS 12 YEARS OLDER THAN ANGELINA JOLIE

Weird, right? Some couples just don't scream: "Age gap." Angelina Jolie is now a solo mom of six following her 2017 divorce from Brad Pitt. This relationship-turned-marriage lasted 12 years following Brad's 2005 split from Jennifer Aniston.

It's hard to believe that Brad Pitt is now 55. That makes him 12 years older than Ange, although it wasn't something anyone ever paid attention to. "He's my family now. We have history, and we work hard to make it great," The Daily Mail quotes Ange saying. Custody battles made the newspaper's headlines over the past year – including Brad's $100 million offer for a divorce settlement.

17 BEYONCE IS 12 YEARS YOUNGER THAN JAY-Z

They're the biggest power couple in music. With a staggering $1.16 billion to their name, as per Forbes, Beyonce and Jay-Z are literally "Running This World." Blue Ivy, Sir, and Rumi are the couple's three kids. Beyonce is 12 years younger than Jay.

"Yoncé likes a mature man. My word is my word. What Jay and I have is real. It’s not about interviews or getting the right photo op. It’s real."

MTV quotes some pretty amazing words from Beyonce on her marriage. Rock solid, in it for the long run, and 100% throwing us #MarriageGoals, Bey and Jay might have it all, but that does include their 12-year age gap.

16 KHLOE KARDASHIAN & TRISTAN THOMPSON: SHE'S SEVEN YEARS OLDER

In 2018, Khloe Kardashian managed to make more headlines for her baby daddy drama than for the actual arrival of True. With a touch more relationship work required than she'd likely hoped for, for a while, Khlo was raising True with what appears to be a bit of a truce with Tristan. Until recently.

Khloe is 34 years old. Tristan is seven years younger. “A soulmate isn’t someone who completes you. No, a soulmate is someone who inspires you to complete yourself," Khloe wrote on her social media. Bet she's eating her words now.

15 JASON STATHAM & ROSIE HUNTINGTON-WHITELY: HE'S 51, SHE's 31

Jason Statham is just one of those Hollywood heavyweights. The Mad Max: Fury Road actor is 51 years old, but age just seems to be a number for this A-Lister. Jason is engaged to his baby momma, supermodel, Rosie Huntington-Whitely. While you wouldn't immediately think the age gap is that big, it's actually 20 years.

At 31, Rosie is, indeed, 20 years younger. He's in charge of "taking out the trash" while Rosie does the ironing, The Daily Mail reports Rosie saying (possibly jokingly). Together, the couple is raising a son named Jack. "He makes me laugh every day," Rosie said about Jason.

14 BLAKE LIVELY & RYAN REYNOLDS: HE's 42, SHE'S 31

As one of the lowest-key couples in Hollywood, Ryan Reynolds and Blake Lively mostly spend their days ducking the cameras. This Hollywood Walk of Fame appearance saw them step out in style, though. At 31, Blake is 11 years younger than Ryan, who is 42. Us Magazine reports Blake saying:

"I knew he would always be my best friend for my whole life."

James and Inez are the couple's two kids. Blake seems to have spent most of 2018 correcting the world on her second baby's name – it isn't Ines, it's Inez. Utterly perfect together, nobody is looking at this couple's age gap (but we did notice it).

13 WHEN YOU REMEMBER KYLIE & TRAVIS SCOTT HAVE AN AGE GAP

Age gaps that aren't huge can still be a big deal– particularly if you're young. Kylie Jenner is now 21. Becoming pregnant at 20 wasn't an issue for Kylie (although keeping out of sight was). Travis is 26. While a five-year age gap can be common, it's worth remembering that Kylie is still young.

If any part of you is questioning how "solid" Kylie and Travis are, just hear what Travis told Rolling Stone. "It got to a point where I was like, I need her with me to operate. She's the one." Baby Stormi recently celebrated her first birthday.

12 AND IT'S 16 YEARS BETWEEN TOM CRUISE AND KATIE HOLMES

Suri Cruise mostly makes headlines for that wardrobe that Marie Claire estimates to be worth $3 million. As one of Hollywood's original "weird-named" kids, Suri flies the flag for celeb kids, although this girl is now 12 – they grow up fast.

Tom Cruise is 56 years old. Katie Holmes is 40. That's 16 years separating this couple, although given that they divorced in 2012, quite a lot of paperwork also separates them. The Dawson's Creek and Misson Impossible stars seemed a match back in the TomKat days, but they've gone their separate ways. "Being a parent, every choice I make is with my child in mind," Katie told MSN.

11 BLAC CHYNA IS OLDER THAN TYGA

Admittedly, we're having trouble keeping up with Blac Chyna's relationships. Fresh in the news is Chyna's split from the rapper, Kid Buu. Lasting slightly longer (but still splitting), Chyna's two relationships that brought kids were with more high-profile guys.

Tyga was just 22 when he became a dad to King Cairo with Chyna. One year older, Chyna was 23 at the time. Not the world's biggest age gap, but every year counts! Chyna also shares a daughter with Rob Kardashian. Much like the couple's engagement, Rob & Chyna ended, and Chyna wound up making The Daily Mail's headlines for "suing" the Kardashians as a result. Eep.

10 GWYNETH PALTROW IS OLDER THAN CHRIS MARTIN

Co-starring with Brad Pitt were the old days. Gwyneth Paltrow is now a hugely successful entrepreneur, although her GOOP lifestyle line doesn't come without its controversies. Gwyneth is a Marvel actress, a mogul, and a mother. She is 46 years old. Her ex-husband, Coldplay frontman, Chris Martin is 41, making him five years younger.

“I definitely don’t read any tabloids,” Gwyneth told People after the couple divorced. For Gwyneth, tabloids are low on the "respectful content." Apple and Moses Martin are this couple's children. As far as celeb splits go, we can't help but notice that this one came as particularly amicable. #Props on the maturity front, you guys.

9 GAL GADOT'S HUSBAND IS TEN YEARS OLDER

One half of Gad Gadot comes as the sword-wielding, stunt-pulling Wonder Woman. Now a full-blown icon, this model and actress was relatively unknown before her superhero role, but Gal now comes with a #AList.

"He's 10 years older than me. He told me on our second date he was serious and wasn't going to wait more than two years to ask me to marry him. Fast-forward two years; he proposed. We were married in 2008,"

Gal told Glamour. Her husband, Yaron Versano, is a high-end real estate agent who mostly keeps out of the spotlight. Together, the couple has two daughters.

8 EDDIE MURPHY IS 19 YEARS OLDER THAN PAIGE BUTCHER

Eddie Murphy made some pretty major headlines in 2018 – becoming a father for the tenth time will do that. At 57, Eddie has over 30 years' experience parenting, but this actor doesn't seem to be hitting the brakes. His fiancée, Paige Butcher, is 19 younger than him.

In December 2018, the couple welcomed their second child. As CNN reports, Eddie's other kids include Eric, 29, Christian, 28, Bella Zahra, 16, Zola Ivy, 18, Shayne Audra, 23, Bria, 28, and Miles Mitchell, 25. That's one busy daddy! Here are Eddie and Paige shortly before their son, Max Charles Murphy arrived. Max joins an older sister, Izzy.

7 MARIAH CAREY IS TEN YEARS OLDER THAN NICK CANNON

Ten years isn't an age gap we look twice at in Hollywood – except when the girl is older. While traditional barriers are being taken down, something about where we're at still looks at older girls with slight curiosity. Mariah Carey is the mother of two whose baby daddy, Nick Cannon is significantly younger.

Mariah is now 49 years old. Not the world's biggest math challenge, but that makes Nick a soon-to-be 39 years old. Together, this former couple is parents to twins, Moroccan and Monroe. Monroe was named after Marilyn Monroe, but Moroccan comes with a bigger twist – the third floor of Mariah's NYC apartment has a Moroccan room, E Online reports.

6 JESSICA SIMPSON: 11 YEARS YOUNGER THAN ERIC JOHNSON

Jessica Simpson and her third baby bump are in their "final weeks," Us Weekly reportsThe actress and beauty entrepreneur shed her party girl days long ago, although her marriage to Eric Johnson has had its unsteady moments. Jessica is 11 years younger than Eric.

"My daughter is about to turn six, May 1 is her birthday, and my son is going to turn five on June 30, and it's just like, 'Wait, so this is no longer a toddler, this is a full-on kid,'" Jessica told Ellen DeGeneres. She even added that her daughter "[already] thinks she's a teenager." Not an age gap we pay much attention to with these parents, but it's there.

5 JWOWW: SAME DEAL WITH ROGER FARLEY

Things are pretty tough for JWoww at the moment. Alongside the challenge of raising a son diagnosed with autism, 2019 brought Jersey Shore fans some major headlines as JWoww accused her former husband, Roger Farley, of being irresponsible. People currently reports that Farley is filing for custody of their two kids.

Once happy, but perhaps not meant to be, this couple nevertheless find themselves on this list due to their age gap. At 32, Jenni "JWoww" Farley is ten years younger than Roger. Jersey Shore: Family Vacation it may be, but this family is going through a lot right now. We wish them all the best.

4 RYAN GOSLING IS 38, EVA MENDES IS 44

Yes, even Hollywood "pretty boys" age. Ryan Gosling is The Notebook icon whose romantic movie catapulted him to fame, although his Disney childhood work was a good springboard. At the age of 43, Ryan still has his youthful good looks, but he's got something more important – a family.

"It depends on the lady. You have to meet somebody that you feel like you can go down that road with,"

Ryan told MTV. Eva Mendes has been Ryan's partner since 2011. She is seven years older than him. Together, they have two beautiful children (although they tend to keep them out the media).

3 GEORGE CLOONEY IS 57, AMAL IS 41

"I thought she was beautiful, and I thought she was funny and obviously smart," George Clooney told The Hollywood Reporter about his human rights lawyer wife, Amal. He did, however, acknowledge their 17-year age gap, adding that Amal "probably thought I was old."

At 57, George Clooney may be well into middle age, but something about this guy will forever stay timeless. George and Amal married in 2014 before having twins. These two form one of the highest-profile couples in Hollywood, but it's clear that their love runs deep. Alexander and Ella are their kids' names. The age gap? 17 years (but who cares?)

2 MEGAN FOX: 12 YEARS YOUNGER THAN BRIAN AUSTIN GREEN

Megan Fox has spent most of her professional life being dubbed a bit of an Angelina Jolie lookalike. With Brad being 12 years older than Ange, there's more than just the looks that are similar. Megan is 11 years younger than her former husband, Brian Austin Green, although the marital status is closer to #On than #Off, here.

Journey River, Bodhi Ransom, and Noah Shannon are this couple's three children. "Love will be reconciled," People quotes Megan saying in 2018. While 2015 saw these two get divorced, it's the most unusual (and inspiring) one we've seen. Megan doesn't seem bothered by the age gap.

1 LIAM PAYNE: 10 YEARS YOUNGER THAN CHERYL COLE

From someone who watched it live, this X Factor audition was adorable. Liam Payne was still young as he nervously took to the mic in front of Simon Cowell and Cheryl Cole, but Cheryl already had her eye on him. One Direction became a global sensation, and these two became a couple.

"Yeah but we don't want to talk about that. She doesn't like to talk about that,"

Heat World quotes Liam saying. Cheryl is ten years older than Liam. While the couple aren't together anymore, they are co-parenting their young son, Bear. What an adorable name.

20 couples and all those age gaps. Who would've thought?

Sources: Heat World, People, The Hollywood Reporter