my how their hair did evolve

One thing that fascinated me was the hair evolution of Kelly and Donna.  It was so amazing, how they went from bad 80's frizz (well, poor Donna did anyway, Kelly's hair was always perfect, even in a scrunchie.)  The later years, when she show got especially boring, was balanced by the startling weekly new hair inventions.  The twistie sculpturesque pointy lasers shooting out of Donna's head as she brooded on the boat with the abusive boyfriend and showed off her french manicure.  Or when Kelly joined the cult and also seemed to have discovered dippity do.