I’ve been watching Battlestar Galactica (2004) and noticed a case of the opposite. It makes sense in context, but it’s an inversion of the trope. (And when things went back to normalish she cut it short again)
I thought that wasn’t a choice but instead because she wasn’t allowed sharp objects. A symbol of her being forced to do things she wouldn’t normally do. But maybe I’m misremembering. I do remember the dinner scene but it’s hard to cut your hair properly by yourself with scissors much less a steak knife.
edit: I was incorrect, she had chosen to grow her hair out before that situation occurred. Time for a rewatch!
Yeah, it was a result of the situation - like I said, makes sense in context. Just a counterexample that happened to be fresh in my mind
Edit: Actually the long hair happened before the crisis Really started, when her location changed (I’m trying to avoid spoilers to some degree) so I do think it was initially a choice, but that does mean it only vaguely fits the trope until it was not a choice.