Nancy's was nice but i never wanted to be a blonde.
Carolyn's hair was very thick and lovely, but a little too straight for my taste. A natural blonde myself, I have always been happy with my hair color but have longed for it to grow a wave or two. So, I'll have to say Vicky's thick wavy hair and Carolyn's tresses both win my vote.
I think many of the DS men had nice hair; Quentin's was wavy and lush and Morgan's looked thick and healthy, too. In fact, one of the few attractive fashions of the late 60s/early 70s were the longer men's hairstyles, which often looked very nice as long as they of the well-groomed, clean variety. All IMO, of course.
Maybe one of the reasons that so many of the men's hairstyles in the 1840 DS stories looked very authentic was that at least length-wise they were very close to those of the 1970s.