We've examined the many hairstyles of Rachel Bilson before.

Needless to say, the star is always a favorite of our staff's.

With this look below, however ... well, let's just say the celebrity hair police might have to be called in to deal with the actress - 911 style.

What is she thinking with this up-do? Why not let the gorgeous brunette locks - or at least her blonde wig - hang down?

Do you love it? Hate it? Let us know ...

Should the celebrity hairstyle police pull over Rachel Bilson?