Ariana's curly hair photo (above) was the fifth fastest to reach 1 million likes
LIST:
1. Selena Gomez in red bikini (12min)
2. Mac Miller tribute (12min)
3. First picture of Kulture (12min)
4. Selena Gomez birthday post (13min)
5. Ariana's curly hair (22min)
6. Beyoncé pregnancy announcement (23min)