Others, like Lele Pons, Nash Grier and Shawn Mendes, have less name recognition yet command armies of fans, having harnessed the possibilities of apps like Vine or Snapchat.
What these junior celebrities all have in common is that they are re-writing the rules of the fame game, becoming role models for their peers for their drive and even earning millions through endorsement deals, music or films.
Here are the hottest young names around, all of them living an access all-areas lifestyle, enjoying entry to the trendiest parties and racking up millions of followers on social media.
Photos: Instagram
Instagram followers: 6.3 million
Every look, from his immaculately gelled hair down to his fashion forward sneakers, is finely analyzed. Ensuring Brand Beckham extends to another generation, the undisputed king of the celeb teen scene has also landed a number of fashion campaigns and been signed by Burberry to photograph their ads.
But this is only the beginning for Victoria Beckham and David's son, who is so well-known that he barely needs his parents' famous surname. David has joked that when the pair are approached in public now, fans usually want Brooklyn's picture rather than his, and he is relegated to the role of picture taker.
Incredibly, the internet pin-up, whose videos of himself skateboarding or hanging out with his friends in LA instantly go viral, only celebrated his 17th birthday on March 4.
Photo: Instagram
When the two First Daughters turned up at their first state dinner recently, looking all grown up in elegant evening gowns, they made headlines around the world. As their father President Obama put it in his emotional speech: "They grow up so fast... Now Malia is going off to college."
The girls' education, their fashion, the family dog and whether or not Malia is dating – all the details on their lives have been closely followed by the world’s press ever since the Obamas entered the White House seven years ago.
Photo: Instagram