I don't really want to hear that. Mine has become wavy only in a strip down the back. (I'm 48.) Before it was straight all over. I wonder if it has something to do with hormones.
My hair did this when I was pregnant 14 years ago and now it is wavy underneath and in the back but not in the front. I really wish it was all wavy or all straight but half and half is no fun and hard to deal with.