7. Ariana Grande, United States
Ariana Grande captivates 374 million Instagram followers with her powerhouse pop star status and unstoppable charisma. Beyond music, she shines on stage in Wicked, leads charity efforts, and runs her own beauty brand, R.E.M. Beauty. When Ariana’s promoting something new, her feed lights up with brilliant, unforgettable moments; pink dresses and green witches included!