Chloë Grace Moretz was 17 in The 5th Wave when she played the character 'Cassiopeia "Cassie" Sullivan'.
That was over 8 years ago in 2016.
Today she is 27, and has starred in 65 movies in total, 14 of those since The 5th Wave was released.
In The 5th Wave, I think Chloë Grace Moretz looks: