1. Mo’ne Davis, 13, Baseball player
2. Sasha Obama, 13, and Malia Obama, 16
3. Kiernan Shipka, 14, Mad Men actress
4. Jazz Jennings, 14, Activist
5. Flynn McGarry, 15, chef du jour
6. Erik Finman, 15, Founder of Botangle.com
7. Nash Grier, 16, Social media king
8. Rico Rodriguez, 16, Modern Family actor
9. Ciara Judge, 16, Émer Hickey, 17, and Sophie Healy-Thow, 17 - Google Science Fair winners
10. Shawn Mendes, 16, Social media musician
11. Jaden Smith, 16, Confucius for the Internet age
12. Becky G, 17, Youtube musician
13. Salma Kakar, 17, Cycling star
14. Lorde, 17, Singer-songwriter
15. Lydia Ko, 17, Golf champion
16. Chloë Grace Moretz, 17, Movie actress
17. Kylie Jenner, 17, and Kendall Jenner, 18
18. Malala Yousafzai, 17, Youngest-ever recipient of the Nobel Peace Prize
19. Rachel Fox, 18, Reality Star turned day trader
20. Bethany Mota, 18, Fashion and beauty blogger
21. Joshua Wong, 18, Leader of Hong Kong civil disobedience movement
22. Austin Mahone, 18, Pop star
23. Tavi Gevinson, 18, Publisher of online magazine for teenage girls
24. Megan Grassell, 19, Bra designer
25. Troye Sivan, 19, Actor turned musician
Pic: Getty Images/Agencies