Rachel McAdams is going back to her brunette roots.

The “Mean Girls” star made fans do a double-take when she debuted her ombre hair at LAX on Friday. McAdams’ new locks were dyed a dark brunette shade at her roots, with golden blond strands at the bottom:

The 36-year-old has been known to experiment with her hair, and has dyed it everything from red to blonde to pink. Perhaps McAdams’ hair makeover has something to do with her new role in HBO’s “True Detective.” Or maybe the natural brunette just missed her old look.