Famous 21 Years Old

LeBron James Jr., popularly known as Bronny James, is an American basketball player. The son of popular professional basketball player LeBron James, LeBron James Jr. has followed in the footsteps of his father, proving to be an important player for his team at school. Apart from playing basketball, he also creates content for the popular e-sports team FaZe Clan.

Irish singer, songwriter, and guitarist Allie Sherlock came into the limelight in 2017 after a YouTube cover of hers went viral. Even though she had been uploading her music on YouTube since 2014, it was only in 2017 that she gained widespread attention. Since then, she has appeared in a few TV shows as well.

Noah Jupe is a British actor best known for portraying Young Otis Lort in the 2019 American drama film Honey Boy. He also appeared alongside Christian Bale, playing Bale's on-screen son, in the popular sports drama film Ford v Ferrari. Son of actress Katy Cavanagh and filmmaker Chris Jupe, Noah Jupe has followed in the footsteps of his parents.          

Courtney Hadwin is an English singer-songwriter who achieved popularity by participating in the first series of ITV's The Voice Kids and the 13th season of NBC's America's Got Talent, where she was a finalist. She is one of the youngest artists to sign a record deal with Arista Records and Syco Entertainment.

YouTube sensation Julianna Grace LeBlanc was part of the family channel Bratayley, along with her siblings Hayley and Caleb, since age 4 and was mostly known for her gymnastics videos. She later gained fame with the Brat series Chicken Girls and the YouTube Red original series We Are Savvy.

British YouTube star Nikki Lilly is best known for her beauty, fashion, and lifestyle content. An ailment that she was born with, known as arteriovenous malformation, has left her physically deformed but hasn’t been able to deter her. She is also associated with charitable activities and is an author, presenter, and singer.

Irish-born gymnasts of Azerbaijani origin, Jennifer Gadirova and her twin, Jessica, have both excelled at artistic gymnastics at the international level. Jennifer has not only won an Olympic bronze for Britain but also became the first British gymnast to earn a Junior World Championship medal, with her silver win in 2019.

Along with her twin sister, gymnast Jennifer Gadirova, British-born Azerbaijani gymnast Jessica Gadirova has created quite a stir in the gymnastics circuit. An expert in floor and vault, she has already won an Olympic bronze and a European Championship gold. She and her sister had taken up gymnastics at age 6.

Alex Eala is a Filipino professional tennis player best known for winning the US Open Junior title in 2022. Eala first achieved popularity in 2020, when she won the Australian Open Junior Doubles title. The following year, Alex Eala won the French Open Junior Doubles title. In 2021, she also won three bronze medals at the Southeast Asian Games. 

Linda Fruhvirtová is a Czech tennis player who has won three singles titles and two doubles titles on the ITF Circuit so far. Since 2020, she has been climbing up the ladder of the WTA-ranking. Linda Fruhvirtová is also considered a player to watch out for in the future.

Konnor McClain is an American artistic gymnast renowned for winning a bronze medal at the Junior World Championships in 2019. After having a prolific junior career, McClain made her debut as a senior gymnast at the 2021 Winter Cup. In 2021, she was also chosen to compete in the World Championships along with eMjae Frazier, Kayla DiCello, and Leanne Wong.

Kadaria is an American internet personality and dancer. She is best known for posting her dance videos on platforms like YouTube and TikTok. She is also famous on Instagram, where she has thousands of followers. Kadaria trained as a dancer and competed at Royal Envy Dance Factory during early stages of her life as a dancer.

Reuben De Maid is a Welsh makeup artist and pop singer-signwriter. He rose to fame after performing live on NBC's musical competition show Little Big Shots. He also posts songs and makeup tutorials on his self-titled YouTube channel. 

Australian surfer, skater, and YouTube star Sabre Norris is the eldest child of YouTuber and former Olympic bronze-medal-winning swimmer Justin Norris. Part of the family channel The Norris Nuts, she is also the first Australian female and the third female ever to land a 540 skateboarding trick.

Jayden Bartels is an American social media celebrity, singer, and actress. She is best known for playing important roles in series like Coop & Cami Ask the World and Side Hustle. She has also appeared on TV shows, such as Dance Moms. Jayden Bartels came into prominence in 2016, when she started posting videos on TikTok.

Mia Fizz is a British YouTuber best known for being a part of the famous YouTube family, The Fizz. Mia achieved popularity by posting videos related to food and lifestyle. In addition to posting videos of her own, Mia Fizz also frequently collaborates with her younger sister Sienna Fizz and they run a separate YouTube channel called Fizz Sisters.