As long as we're talking Katherine Langford's hair, we have to talk about her "13 Reason Why" co-star Alisha Boe's. Boe's hair game is very, very on point -- forget model off-duty, this is 100 percent princess off-duty.

Image via @alishaboe

Here's a fun look that combines the half updo with the bun -- and it's the best of both worlds. You've got the fun drama from the oversized bun and the laidback glam of the rest of your hair worn down.

Image via Pinterest

When in doubt, just dye your whole head of curls shocking pink.

Image via @stephanethamires

Oh, and if pink isn't your thing? Go for aquamarine!

Image via @eucamartins

It's safe to say that, along with singing, Lorde has truly mastered the art of hair that's the perfect balance between tousled and polished.

Image via Getty