Celebrity Hair Affair: Kate Walsh

Kate Walsh starred on ABC Grey's Anatomy, which returns for its fifth season tonight, then went on to star on Private Practice, its lackluster spin-off.

Her recent hairstyle shift may have been another regression.

The gorgeous redhead chopped a few inches off her awesome hair as she opted for a sleek, shoulder-length bob for this past week's Emmy Awards ...

Which Kate Walsh hairstyle is best?