"Beautiful straight" before the '90s?

[glamorousnymph]

Pondering Jake's sig line:

“The hair went from perm to growing out perm to really bad growing out perm to almost straight to good straight to long straight to beautiful straight to a lot of work straight back to the perm.”

I don't remember Stevie's hair going to beautiful straight until the early '90s maybe? (Even that could be debatable, depending on how you feel about split ends.) Were there "beautiful straight" periods in between the growing-out perms and perms? Seems like she went from curly to shag to curly to frizzy to curly to frizzy to curly to straight to slight waves to straight to slight waves.