Kim Kardashian recently posted a string of childhood pics of herself. These photos are 100% teen smiles, awkward fashion choices, and, admittedly, they're a fairly brave move. While most people have baby photos floating around, celebs tend to keep these rare shots under wraps. Glistening-white teeth, perfect makeup, stylish haircuts, and posed selfies are what they prefer to have fans seeing.

Baby photos are always fascinating– celeb or not. Sometimes, the reaction is: "You absolutely look the same!" Other times, people will look through those old albums, glance back at the adult, and stand there completely baffled– "I just don't see the resemblance!" will be the comment.

Ariana Grande. Beyonce. Jennifer Aniston. Justin Bieber. They were all kids once. They were also babies once. Just like any regular baby, they sat in high chairs, strollers, and peeped out of cribs. While some have retained their childhood features, others are simply unrecognizable.

Quite why some celebs are so reluctant to share their childhood photos is unknown. For some though, childhood brings back difficult memories. Jennifer Lopez, Cardi B, Mariah Carey, and Selena Gomez all grew up on hard times. It was "dollar store memories" for Selena. For Justin Bieber, it was "ordering water instead of soda."

We've rounded up the best ones. From tiny baby pics to childhood snaps, here are 20 pics of celebs when they were still young. Some faces look the same. Others look like different people...

20 MILEY CYRUS: SAME CHEEKY GRIN

Miley Cyrus might be all grown up, but that cheeky childhood grin hasn't gone anywhere. Miley is a superstar who grew up as a celebrity. The daughter of the musician, Billy Ray Cyrus is now 26 years old. Miley has been open about the pressure of growing up in the public eye, though.

"I didn't realize how much pressure I was under," Miley told Today in 2017. Now a coach on The Voice and an advocate for good causes, Miley's smile is world-famous. In fact, it's even the reason behind her name. Miley's birth name is Destiny Ray Cyrus, but she adopted Miley on account of that cute smile.

19 JUSTIN BIEBER: SAME FACE (PROBABLY LOST THE BEAR)

Justin Bieber was your average Canadian kid until he was discovered on YouTube. Arguably the biggest pop star of 2018, Justin is now 24 years old, married to Hailey Baldwin, and he definitely has a huge female fanbase. Justin also happened to be a really cute kid.

Justin was born in London, Ontario in 1994. His family didn't have much money, and Justin recalls "choosing water over soda" in restaurants to save cash. While some men look unrecognizable in their childhood photos, Justin joins the list of celebs who are instantaneously recognizable. The teddy bear? Justin has probably grown out of that.

18 ARIANA GRANDE: WE JUST ABOUT SEE IT IN THE EYES

Ariana Grande is known for her signature high ponytail, cat-winged eyeliner, over-the-knee boots, and angelic voice. "Thank U Next" has just reached platinum level, and that's after the record-breaking success from Ariana's Sweetener album. Ariana grew up in Boca Raton, FL.

Ariana was under one year old here. While those big brown eyes are definitely Ari, the rest of the face is just too young to show us the Ariana we love and know. We do know, however, that Jaws was Ariana's favorite movie as a 2-year-old. Ariana admitted that "everyone came and left" regarding her Jaws-centric kiddie birthday party.

17 JENNIFER ANISTON: WE DEFINITELY SEE IT IN THE EYES

At 49, Jennifer Aniston is still one of the most beautiful and sought-after actresses in Hollywood. Jen hasn't been the luckiest in love, but her career has proved outstanding. Jen became a household name overnight in 1994 when Friends started airing.

Jen admitted to being teased as a child for her size. 

"I was one of the kids who the others would make fun of," Jen told The Daily Mail. "It was an odd period of time during fifth, sixth, seventh grades." All we're seeing is Jen's beauty.

16 GIGI HADID: A CHILD MODEL

Gigi Hadid is quite possibly the fastest-rising "it" girl of 2018. This model has Kendall Jenner as a BFF, Zayn Malik as a boyfriend, and over 40 million of us are following Gigi on IG. Gigi Hadid is the face of Tommy Hilfiger, Reebok, and countless other designer brands.

Gigi was already modeling as a child– this pic comes from a Guess campaign. With those icy-blue eyes, porcelain features, and light hair, we 100% see why the modeling scouts were saying "yes." Gigi has grown into a beautiful young woman, but she had her childhood looks as a starting point.

15 CHLOE GRACE MORETZ: A LITTLE BALLERINA

Chloe Grace Moretz definitely has one of those faces where you can see the grown-up in the kid. "Really trying to figure out our future careers..." was the hilarious caption to this pic of Chloe and her brother, which the actress posted online. The Kick-Ass star was born in 1997, making her 21 years old now.

"I've definitely had an interesting childhood," Chloe told The Telegraph. Chloe started her movie career at the age of 11. "I don't think that I've missed out on my childhood in any way," Chloe added. "I've actually had a more interesting childhood."

14 SELENA GOMEZ: A CONFIDENT SIX-YEAR-OLD

Selena Gomez is now in her mid-20s. WIth 144 million followers on IG, Selena was the most-followed account (until Christiano Ronaldo knocked her off the top spot). With a singing and acting career, world fame, and a down-to-earth vibe, Selena is a household name.

Selena was 6 years old when this pic was taken. The facial features that we know Selena so well for are just about visible, but you wouldn't immediately recognize her. Selena grew up on hard times in Texas with memories of getting "dollar store spaghetti". Of course, Selena's fame now means that her life is a lot less challenging on that front.

13 MAISIE WILLIAMS: ALREADY "GAME OF THRONES"

Maisie Williams was once a regular kid. With Game of Thrones though, Maisie is now a 21 year-old star best known for her role as Arya Stark. This British actress was born in 1997. Sitting there in that child swing, we 100% recognize the face we know. Amusingly, you could argue that Maisie was playing her own "Game of Thrones here."

Maisie has actually said that she was "fed up with being called cute." But she is!

"I remember being told I was cute and feeling it was really patronizing– what if I wanted to get muddy and play with the boys?" Mailie said in an interview with The Telegraph.

12 BEYONCE: ALREADY "RUNNING THIS WORLD"

Beyonce is one of the most inspiring women around. With three kids (including twins), this mom juggles a powerhouse career, touring with Jay-Z, a fashion empire, and all the #GirlPower in the world. Beyonce has posted a fair few childhood pics of herself on social media.

Beyonce was born in Houston, Texas. Her mom was a hairdresser and salon owner, while her father was a Xerox sales manager. She started singing at St. Mary's Elementary School. Amazingly, despite her beauty, Beyonce was teased as a child. Now? Beyonce is one half of a power couple worth $1.16 billion. We definitely recognize that face.

11 TAYLOR SWIFT: YOU'D NEVER KNOW IT WAS HER

Sitting there in that high chair, this cute little blondie could be one of a million kids. It is, in fact, Taylor Swift. Taylor was born in 1989 in Reading, Pennsylvania. She was way too young to have any idea what her life would turn into here, and we've got to say, we barely recognize her.

"Little kid, little problems. Big kid, big problems." Taylor has admitted that she was insecure as a child.

"I think then you grow up and realize that the same things that you deal with in your childhood affect you when you're a grown up as well," Taylor said. We hope that she had a happy childhood, overall.

10 LADY GAGA: ALREADY A LITTLE ENTERTAINER

Lady Gaga is a famous face that now comes in endless different looks. Gaga has the statement outfits, the costumes, the makeup, and more wigs than we can count. Gaga does, however, post #NoMakeUp shots to social media. This beautiful singer and actress is now engaged. The childhood pics? Gaga was an entertainer from the start.

Stefani Joanne Angelina Germanotta is Lady Gaga's real name. She was born in 1986 and grew up in New York City. Her dad actually invented guest Wi-Fi. Like many stars, Gaga has admitted to feeling insecurities as a child. The natural talent was there though, even if we can't recognize her.

9 KIM & KOURTNEY KARDASHIAN: ONE LOOKS THE SAME, ONE DOESN'T

The Kardashian sisters are some of the biggest faces on TV and social media. Kim Kardashian recently turned 38. Kourtney Kardashian will turn 40 in April 2019. Here is a cute childhood snap that Kim shared to social media. We definitely see the resemblance in Kourtney (on the left), but do you agree that Kim is less recognizable?

Kim has often said that family is the "most important thing in the world." These sisters might have their arguments– especially with Kim calling Kourtney "the least exciting to look at" on KUWTK, but deep down, there's so much love here. #SisterPower

8 ANGELINA JOLIE: MAKES SENSE ONCE YOU LEARN IT'S HER

That's often the case with childhood photos, right? You don't immediately recognize the person, but once you find out who they are, you're able to make the connection between the adult and the kid. Angelina Jolie is an actress whose beauty and talent gave rise to a glittering career. Ange has also been voted "World's Most Beautiful Woman" by Vanity Fair.

Angelina is now 43 years old. She also has six kids. "I wake up with my kids and I'm happy," Angelina has said about motherhood. Angelina has said that her mother "always taught [her] to be a good person."

7 BELLA HADID: SAME DEAL

Much like her sister, Gigi, Bella Hadid was a child model. Light-colored eyes and an angelic face made this girl perfect for the poster campaigns, and Bella continues this as an adult. Bella was born in 1996, making her 22 years old. The Hadid sisters grew up in an $85 million mansion which The Daily Mail has called "one of a kind."

Bella means "beautiful" in Italian, and this child was indeed beautiful.

Much like Angelina Jolie though, it's a case of being able to pin down Bella's identity once you know that it's her. Bella is currently the face of major brands like Bulgari and Fendi.

6 MINDY KALING: A "NERDY" KID

Mindy Kaling is a face that we all know from the hit show, The Office. Mindy has gone on to produce and act in The Mindy Project, as well as becoming a style icon. This adorable pic of Mindy showed us a kid with glasses, which people often affectionately call being a "nerdy kid."

Mindy is now a mother herself. At 39, Mindy doesn't quite look the same as her childhood photo, but there is a slight resemblance. Mindy chose to have a child "a little bit later in [her] career." She has referred to the freedom this has given her as the "biggest perk."

5 MEGAN FOX: A CUTIE PIE (WE WOULDN'T RECOGNIZE)

Megan Fox is an actress who is known for her looks. While some fans call Megan the "Angelina Jolie lookalike," this star has carved her own career, plus she is a mother of three. Megan has been open about the poverty she experienced growing up. Not being able to afford razors meant that Megan wore jeans instead of skirts as a teenager.

Megan described herself as "obnoxiously outgoing as a child." She said that she would "put on shows" in the living room. While Megan was an adorable toddler here, we can't say that we would immediately recognize her. The cameras now follow Megan wherever she goes.

4 PARIS HILTON (IN THE MIDDLE): NOT MUCH RESEMBLANCE

Paris Hilton is a name that everybody knows. The Simple Life star and hotel heiress has made a career out of her lavish lifestyle and shopping, although Paris is now a renowned face in the DJ circle. Paris shared this cute snap of herself (in the middle) with her sister, Nicky and cousin.

As an adult, we immediately recognize Paris. This celeb has an iconic face, an iconic wardrobe, and something of a legendary feel to her name. As a kid? Paris was a total cutie, but we wouldn't know that it was her. Paris has also shared kiddy pics of herself in Judy Garland outfits.

3 MARY-KATE & ASHLEY OLSEN: DEFINITELY THEM

The Olsen sisters are now all grown up and The Adventures of Mary-Kate & Ashley Olsen feels like a million years ago. These 32-year-old twins and former Full House actresses are now style queens and socialites, but let's not forget that they were childhood stars.

Looking at this picture, you immediately know that it is Mary-Kate and Ashley. They've got the same cheeky grin now, although you've got to admit, they were absolutely adorable as kids. They were born in Sherman Oaks, CA in 1986. Amazingly, Mary-Kate is now married. Both sisters are now founders of luxury fashion brands.

2 KENDALL & KYLIE JENNER: ALREADY IN BURBERRY

The Kardashian-Jenners may have gotten a lot wealthier in recent years, but these kids were fortunate enough to grow up with luxuries. This throwback pic of Kendall and Kylie Jenner was posted to social media by Kendall in 2018.

#Twinning in designer clothes was a lifestyle for Kendall and Kylie from day one.

While KUWTK has shown us endless arguments between these two sisters, they're close as they come. Kylie is now 21. Kendall is 23. Kendall even recently said that Kylie giving birth has "brought us closer together." We're definitely seeing Kendall's face here, but Kylie has changed a lot.

1 LEONARDO DICAPRIO: IT'S LIKE HE HASN'T CHANGED

Leonardo DiCaprio is one of the most famous faces on the planet. Titanic launched this star's career, and at 43, Leo is finally an Oscar winner. The actor was known for his boyish good looks in early years, but fans knew that this guy came with a ton of talent.

Leonardo DiCaprio grew up on hard times. His salary for Once Upon A Time In America is $25 million.

Leo just had one of those faces, right? He looks the exact same now as he did then.

Sources: Billboard, Complex, Vogue, Parents, People