Millie Bobby Brown - Millie Bobby Brown was the runaway star of the hit Netflix series 'Stranger Things.' The world has been obsessed with her since she first appeared on our screens as Eleven when she was only 12 years old. She's gone on to star in films such as 'Enola Holmes' and 'Godzilla: King of the Monsters,' as well as becoming a coveted model featuring on the covers of Elle, Bazaar, and Teen Vogue.

3 / 30 Fotos

Yara Shahidi - Yara Shahidi has an impressive number of credits under her belt. Her best known work was her starring role as the eldest daughter in the series 'Black-ish' and its spin-off series 'Grown-ish.' Shahidi is quickly becoming a feminist activist and style icon as well as a respected actress.

4 / 30 Fotos

Halle Bailey -

Halle Bailey came to our attention along with her sister following the success of their singing duo Chloe x Halle. She's gone on to appear in the TV series 'Grown-ish' alongside Yara Shahidi, and will soon star as Ariel in the live-action remake of 'The Little Mermaid.'

Getty Images

5 / 30 Fotos

Finn Wolfhard -

As a child actor, Finn Wolfhard had temporary roles in 'Supernatural' and 'The 100.' He made it big at the age of 14 when he got a lead role in the Netflix series 'Stranger Things' and went on to star in the Stephen King horror 'It' the following year. By the age of 18 he had already made his directorial debut with the short film 'Night Shifts.'

6 / 30 Fotos

Joey King -

Joey King was incredibly prolific as a child actor. She had dozens of acting jobs before the age of 12! Having already proven her skills as a child, she was able to score some serious starring roles in her teens. She gave an incredible performance in the disturbing hit series 'The Act,' for which she received nominations for both a Primetime Emmy Award and a Golden Globe Award.

Getty Images

7 / 30 Fotos

Kaia Gerber - Kaia Gerber is the daughter of supermodel Cindy Crawford and millionaire businessman Rande Gerber. She has certainly followed in her mother's footsteps and has been doing campaigns and runways for some of the biggest brands in fashion. She won the coveted title of Model of the Year at the British Fashion Awards in 2018.

8 / 30 Fotos

Willow Smith - Willow Smith comes from a highly successful family, and she's no exception. She appeared in the film 'I Am Legend' alongside dad Will Smith when she was seven years old, and had a hit single with 'Whip My Hair' when she was only 10! She has continued to flex her creative muscles as a musician and fashion icon.

9 / 30 Fotos

Asante Blackk -

Asante Blackk has been one to watch since his breakout role in the chilling miniseries 'When They See Us.' It was his first TV part, and he received an Emmy nomination for Outstanding Supporting Actor in a Limited Series.

Getty Images

10 / 30 Fotos

Maitreyi Ramakrishnan -

Maitreyi Ramakrishnan is the breakout star of Mindy Kaling's 2020 Netflix series 'Never Have I Ever.' It was her first ever role and she only tried out for the part after being cajoled by a friend. She managed to book the gig over 15,000 other hopefuls and the show was a huge success!

Getty Images

11 / 30 Fotos

Josie Tota -

Josie Tota is a talented young actress who started her career with male roles in series such as Disney's 'Jessie' and Mindy Kaling's 'Champion.' Tota came out as a transgender woman in 2018, and scored a major female role in the reboot of 'Saved By the Bell.'

Getty Images

12 / 30 Fotos

Noah Schnapp - Noah Schnapp is another young star who made his name in the Netflix series 'Stranger Things.' Prior to this, he had a budding career as a young voice actor, getting the lead as Charlie Brown in the 2015 film 'Snoopy and Charlie Brown: The Peanuts Movie' when he was 11 years old.

13 / 30 Fotos

Noah Jupe -

Noah Jupe has already scored major roles in some massive feature films! The young British actor starred alongside Shia LaBoeuf in the 2019 film 'Honey Boy,' and more recently in the 2020 miniseries 'The Undoing' with Nicole Kidman and Hugh Grant.

Getty Images

14 / 30 Fotos

Charli and Dixie D'Amelio -

Social media stars are on the rise and the line between celebrity and influencer is becoming blurrier. Sisters and TikTok stars Charli and Dixie D'Amelio have 50 and 37 million followers on the app respectively, and are both earning millions of dollars. What's more, in late December 2020 it was announced that the sisters and their family would get their own show on Hulu.

Getty Images

15 / 30 Fotos

Maddie Ziegler -

You might not recognize dancer Maddie Ziegler, but you've definitely seen her work! The young star has been dancing in Sia's videos for years in that iconic blonde wig. In addition to this impressive credit, she's set to appear in Steven Spielberg's upcoming adaption of 'Westside Story.'

Getty Images

16 / 30 Fotos

Rowan Blanchard -

Rowan Blanchard was the star of the Disney series 'Girl Meets World' for three years, and made the seamless transition from Disney teen prodigy to feminist activist and fashion icon. In 2015, she made it onto Time's list of Most Influential Teens at the age of 14.

Getty Images

17 / 30 Fotos

Skai Jackson - Skai Jackson has been acting since she was five years old and has appeared in dozens of movies already! She got her first big roles on the Disney shows 'Jessie' and 'Bunk'd,' and appeared on 'Dancing with the Stars' in 2020.

18 / 30 Fotos

Lachlan Watson -

Lachlan Watson is one of the main characters in the Netflix series 'Chilling Adventures of Sabrina.' When the first season was released in 2018, they were one of the youngest non-binary actors in Hollywood.

Getty Images

19 / 30 Fotos

Rohan Chand -

Rohan Chand's career began at the age of six during a Little League game. A local mom who happened to be a casting director for Adam Sandler spotted him and thought he had potential. He went on to score roles in 'Homeland,' 'Bad Words,' and 'Lone Survivor.' His big break was the role of Mowgli in the 2018 blockbuster 'Mowgli: Legend of the Jungle' where he starred alongside Christian Bale, Cate Blanchett, and Benedict Cumberbatch.

Getty Images

20 / 30 Fotos

Sophia Lillis -

Sophia Lillis has been a familiar face for a few years now. She starred in the Stephen King horror sensation 'It' in 2017, she was Nancy Drew in the 2019 film 'Nancy Drew and the Hidden Staircase,' and got the lead role in the 2020 Netflix series 'I Am Not Okay with This.' Fun fact: she's actually a brunette but has continuously been cast as iconic redheaded characters!

Getty Images

21 / 30 Fotos

Mackenzie Foy -

It's hard to believe, but Mackenzie Foy played Renesmee in 'The Twilight Saga.' Your eyes are not playing tricks. She was 11 years old during filming, but they managed to make her look like a five-year-old. Regardless, she's now a fully grown woman and successful actress. In 2018, she starred in the movie 'The Nutcracker and the Four Realms' as well as in the 2020 Disney remake of 'Black Beauty.'

Getty Images

22 / 30 Fotos

Willow Shields -

Willow Shields has amassed some seriously impressive credits. She played Primrose Evergreen in 'The Hunger Games' film series, the sister to Jennifer Lawrence's character. She was also a co-star in the 2020 Netflix series 'Spinning Out.'

Getty Images

23 / 30 Fotos

Isabela Merced -

Isabela Merced was the star of the hit Netflix holiday film 'Let It Snow' in 2019, when she was 18 years old. She was also cast as Dora the Explorer in the 2019 film adaption of the cartoon entitled 'Dora and the Lost City of Gold.' One characteristic that critics have noted is the unique humor she brings to her roles. She's already got more movies in the works, so we can expect to see a lot more from her!

Getty Images

24 / 30 Fotos

Abraham Attah -

Abraham Attah is a young Ghanian actor who scored a leading role in the hard-hitting film 'Beasts of No Nation' alongside Idris Elba. He was only 16 years old when he won the Independent Spirit Award for Best Male Lead for his performance. More recently, he played Abe in 'Spiderman: Homecoming.'

Getty Images

25 / 30 Fotos

Megan Charpentier -

Megan Charpentier also appeared in the movie 'It,' in the role of a school bully called Gretta. This wasn't her first horror film either! Charpentier is best known for her role as a feral child called Victoria in Guillermo del Toro's 2013 movie 'Mama.' We're sure to see more chilling performances from this rising star.

Getty Images

26 / 30 Fotos

Jaeden Martell -

Jaeden Martell is another 'It' star, but that wasn't the only impressive role he landed before his 18th birthday. He also had a part in the Oscar-nominated film 'Knives Out,' as well as the lead in the 2017 movie 'The Book of Henry.'

Getty Images

27 / 30 Fotos

Wyatt Oleff -

Wyatt Oleff is another member of the Losers Club from the movie 'It.' He joined Sophia Lillis once again to star in the Netflix series 'I Am Not Okay With This.' You might also recognize him from 'Guardians of the Galaxy.' That's a pretty impressive resume for a teen!

Getty Images

28 / 30 Fotos

Max Charles -

Max Charles was already an industry veteran by the time he hit 16, which wasn't that long ago! He's done voice work in a wide range of well-known productions such as 'Family Guy,' 'Adventure Time,' and 'Mr. Peabody & Sherman.' He also played a young Peter Parker in 'The Amazing Spiderman' film series.

Getty Images

29 / 30 Fotos

Ruel -

Singer Ruel is already a superstar in his home country of Australia and it's only a matter of time until he makes it big everywhere! He got a shout-out from the legendary Elton John when he was only 16 years old.

Sources: (Cosmopolitan) (Insider) (Hollywood Reporter)

Getty Images

30 / 30 Fotos

The biggest celebs under the age of 21

These are the ones to watch!

07/01/21 | StarsInsider

CELEBRITY Young

Let's be honest: how old do you feel when you realize that someone born in 2002 is a legal adult with the right to vote? And in some of the cases on this list, they're already millionaires...

Kids seem to be growing up faster these days, or perhaps they're just being given more opportunities to showcase their talents. Teen stardom is on the rise with the growth of social media, while Netflix and similar streaming services have also increased the market for the young adult genre. There are bigger and better roles available for young stars in all corners of the entertainment industry. Click through this gallery to discover the ones to watch.