I had this reply all mapped out when I decided to check Paul's links to past Polls about Lois/Teri's hair.
Just check my response on the april 2003 link. That's exactly what I was going to say here.
Tank (who thinks it's interesting that the shorter style that Julie liked the best was the wig that Teri wore while her hair grew out from the super short chop she got for that lame TV movie she'd done between seasons)