Forget the hair and makeup for a second -- celebrity moms are just like us in the delivery room. Back when these celebs had their first baby, there wasn't as much of an emphasis on having perfect contour and highlights for the paparazzi. Wouldn't it be cool to step into a time machine and revisit the day Kris Jenner gave birth to her eldest, Kourtney? Or when Madonna had Lourdes?

The millennials who are obsessed with pop culture weren't around in those days. All we see now is what's presented to us on social media or reality TV -- but photographs don't lie. Some of these are in black and white, while others truly capture what fashion and style were like in the 90s and early 2000s. We're talking flared jeans, people!

Chances are you may not even recognize some of these women in their purest form. No Photoshop, no editing. Just true, authentic beauty as a first-time mom. This list includes a mix of mainstream and unconventional celebrities with throwback photos that really are worth one thousand words. We really can't believe it's been that long since Blake Lively and Britney Spears became moms. Does anyone else feel like, really old right now?

23 Britney Spears

Whoever said pop stardom and motherhood don't mix clearly never met Britney Spears! The Princess Of Pop is a proud mother to two adorable boys, Sean and Jayden, from her relationship with Kevin Federline.

Prepare to feel really old with this next detail: Kevin and Britney had their own reality show documenting their romance and family life back in 2005.

That was over a decade ago. Sadly, Britney And Kevin: Chaotic only lasted on the UPN network for one season, but boy was it interesting!

22 Christina Aguilera

First Britney, now Christine Aguilera. Is anyone else getting Mickey Mouse Club vibes? It seems like just yesterday that we were dancing to "What A Girl Wants" and "Genie In A Bottle." Since those days, Christina has gone on to become a mom to daughter Summer and son Max. She starred on NBC's The Voice for a while, but gave up her seat in the big red chair after announcing that the show "is not about music anymore." We wonder what she'll do next!

21 Kris Jenner

Before Kris Jenner, the word "momager" didn't exist. The Kardashian empire coined this term after Kris stepped up to the plate to handle her son and daughters' paychecks, calendars, and photo shoots. Definitely not an easy feat for a family this big! But before Keeping Up With The Kardashians took off, Kris was just a regular mom juggling work and her marriage to Robert Kardashian, the famous lawyer who defended OJ Simpson. To see her this happy and genuine with her children (and no filming cameras around) is beautiful!

20 JK Rowling

Attention Harry Potter fans -- this next picture is about to blow your mind!

This here is JK Rowling before she became one of the most successful authors in the world.

In fact, she's the ninth-best-selling fiction author of all time and has an estimated 500 million copies sold of her works. Yeah, no big deal. Away from her keyboard, JK Rowling is mother to three children, Jessica, David, and McKenzie. Is it safe to say that her natural hair color is red? She's rocking the blonde a lot these days!

19 Madonna

All we can say about this picture is WOW. Who here has seen this picture of Madonna before? Probably no one. We're kicking it way old school with this black and white picture of Madonna with daughter Lourdes.

Leave it to the "Ray Of Light" singer to still look fabulous and glam only months after giving birth.

Just look at her heels, leopard-print shirt, and the classic Hollywood curls in her hair. It's so effortless yet breathtaking at the same time. Mom goals!

18 Kourtney Kardashian

Out of all her sisters, Kourtney was the first to give birth. You might even say she started a domino effect now that all her siblings (except for Kendall) are parents. Kourtney's three births to Mason, Penelope, and Reign were documented on Keeping Up With The Kardashians. In fact, her rocky romance with boyfriend Scott Disick was one of her main storylines. The couple never married and wound up parting ways after 10 years of dating, but they still make a great co-parenting team!

17 Meryl Streep

All hail the legendary Meryl Streep! We can't think of one of our favorite movies without seeing her face, just look at this lineup -- The Devil Wears Prada, Sophie's Choice, Fantastic Mr. Fox, and so much more.

Meryl Streep isn't the usual red-carpet-walking celebrity and that's why we love her. She's all about family and kindness. No drama.

She has three daughters, Mamie, Grace, and Louisa, and one son, Henry. Oh, and how's this for relationship goals? She's been married to Don Gummer since 1978, which is a lifetime in Hollywood.

16 Gwen Stefani

If we were to look up "cool mom" in the dictionary, we'd definitely see Gwen Stefani's face on the page!

From her platinum blonde hair to her signature red lipstick, Gwen knows how to juggle fashion, beauty, and parenting like a pro.

Her marriage to singer Gavin Rossdale welcomed three boys: Zuma, Apollo, and Kingston, all of whom have adopted their parents' edgy styles. These days, Gwen's kids can often be spotted with her country singer boyfriend Blake Shelton. We love a happy modern family story!

15 Cher

Want a real vintage throwback? Okay, how about this picture of Cher with her son? We can't quite tell if this is Chaz Bono or Elijah Blue. Just a quick note, Chaz was born female, is transgender and prefers going by masculine pronouns. The "Turn Back Time" singer had Chaz with her longtime love and recording partner Sonny, who passed away in 1998 after a skiing accident. Elijah was born to Cher and American singer-songwriter Gregg Allman. Both of Cher's sons are grown now and paving their own path in the entertainment industry.

14 Katie Holmes

Katie and daughter Suri are mirror images of each other! They have the same hair color, eye shape, and charming smile. This dynamic duo is often photographed holding hands in New York City or Los Angeles. Although it's rare to see them together, rumor has it that Katie has been dating actor Jamie Foxx for some years now. But where's father Tom Cruise? Well, that's the mystery of the century. No one really knows why he wasn't seen with Suri -- or whether those reports are even true!

13 Heidi Klum

It's the more the merrier in Heidi Klum's house! This supermodel is more like supermom with her four children, Helene, Lou, Johan, and Henry. She was married to singer Seal from 2005 to 2014. Since then, she's been linked to art curator Vito Schnabel and Tokio Hotel guitarist Tom Kaulitz, who's 16 years her junior.

Clearly, the America's Got Talent judge is lucky in love, career, and family. Not to mention, she always looks flawless everywhere she goes. Curse those model genes!

12 Elle Macpherson

Elle Macpherson is one of those chic underground celebrities we don't hear of that often. When's the last time she made headlines or front page news? But that's the beauty of it, her career speaks for itself. She is best known for her record five cover appearances for Sports Illustrator that began in the 1980s. To the modeling industry, she's known as "The Body" for obvious reasons. At home, however, to her two sons, she's known as mom. And boy, does she rock that role!

11 Gisele Bundchen

At 11-months old, Gisele Bundchen's daughter Vivian Lake is already destined to be a yogi. The Brazilian supermodel is married to New England Patriots quarterback Tom Brady. Together, they have one daughter and a son named Benjamin.

From the looks of Gisele's Instagram page, it appears she loves practicing yoga every morning on her patio in Boston with Vivian.

Benjamin seems more interested in watching his daddy play football and cheering him on from the sidelines in his football jersey. Such a sporty family!

10 Serena Williams

Serena William's birth to daughter Alexis Olympia is the most current on this list, taking place in 2017. Just this September, adorable Alexis turned one. But instead of having the typical clown and cake birthday party, Alexis will get to do something most babies (and adults) only dream of -- see her mother compete in the U.S Open. It sounds like the tennis pro has a rule in place when it comes to celebrating birthdays. She told E! "we're Jehova's Witnesses so we don't do that."

9 Whitney Houston

This picture is so bittersweet. To see one of the greatest singers looking so humble, down-to-earth and happy with her daughter is heartwarming. That's how we'll forever choose to remember Whitney and Bobbi Kristina Brown. On July 26, 2015, news broke that Bobbi passed away at the young age of 22 after being placed on life support. Not only do Bobbi and Whitney live on through their family, but also in her music as well. Whitney is the beautiful voice behind "I Will Always Love You" and "When You Believe."

8 Courteney Cox

On the TV show Friends, Monica Geller always dreamed of starting a family and having kids of her own with Chandler Bing. It seems her off-screen life is pretty similar, having daughter Coco with David Arquette. The two met on set of the horror franchise Scream and fell quickly in love. David later appeared in Friends as Phoebe Buffay's stalker, who actually thinks he's following her twin sister Ursula. Following their divorce, David admitted that he still gets "emotional" watching scenes with Courteney. Awww!

7 Kate Moss

Even when she's off-duty, Kate Moss still looks as breathtaking as ever! It must be that new mom glow. People are always talking about how pregnant women have this inner glow. Could it be because of the change in hormones? Whatever biology is behind it, we can't ignore the massive smile on Kate's face holding her baby -- daughter Lila. Her father is Jefferson Hack, the CEO and co-founder of Dazed Media. He runs an independent media company that produces stories across its print, digital and video brands.

6 Cindy Crawford

Another off-duty supermodel!

This here is Cindy Crawford with her first-born son, Presley Walker. Surely it's no surprise that he's followed in his mother's footsteps as a rising model.

At the young age of 19, he's already posed for Burberry and walked the runway for Paris Fashion Week with Cindy cheering him on from the crowd. It's a similar story for her look-a-like daughter Kaia Gerber. She's strutted her stuff in Milan, Paris, London -- all over the world, really. This family is unstoppable!

5 Kate Beckinsale

It took us a minute to recognize this actress. It's Kate Beckinsale with then-boyfriend Michael Sheen. The two were in a serious relationship from 1996 to 2003, during which time Kate gave birth to her only child, a daughter named Lily Mo. They met when cast in a touring production of The Seagull in early 1995 and moved in together shortly afterward. Kate later married Len Wiseman in 2004 but separated from him in 2016. Movie buffs may recognize her from the Underworld vampire franchise.

4 Nicole Kidman

Talk about six degrees of separation! Before Katie Holmes and Tom Cruise tied the knot, he was married to Australian actress Nicole Kidman. Together, they had one daughter named Isabella Jane. The two parted ways in 2001 and five years later, she married country singer Keith Urban. Nicole is now a mother-of-four to Sunday, Faith, Connor, and Isabella.

Has anyone else noticed that Nicole hasn't aged a day since this picture was taken? We desperately need the details to her skincare routine.