But there's no need for Chloe Moretz to grow up too fast when it comes to style -- at 14, she can wear all the party dresses she wants!
So we were bummed to see that Moretz chose a decidedly grown-up look for last night's WIE Symposium Ladies' Night Gala Dinner held at Le Caprice in New York City.
The 14-year-old star wore a conservative white blouse tucked into a high-waisted purple and black skirt, pairing with librarian-chic ensemble with plain, black T-strap pumps.
Moretz may have been trying to dress up for the mature crowd, which included Arianna Huffington, Iman, Elettra Wiedemann, Anouck Lepere, Rachel Roy and Alina Cho. But couldn't she have chosen something a little less boring?
Take a look at Chloe's outfit below and tell us what you think.