^Not to sound rude or anything. I know it may feel weird seeing them with a new look at first, but why do the characters HAVE to keep the same hair styles? I mean it's been 10 years for them, it's no suprize that Jill decided to let her hair grow out.
As long as it's nothing too drastic, I think changing the hair (as long as it still looks good on the character.) shows alittle creativity. Sure we love the STARS outfits, but what would it look like if they wore the same outfit as a default in every game for 10 years in RE time? The hair is not on the same scale as clothing but you see what I mean right?
Chris' hair is different too. It never was spikyish till RE5. The blonde hair was a big change, but the long brunette hair Jill had in the flashback was not that big of a deal to me. Her face is still pretty much the same. I could see if she came back with dred locks or something just plain out weird like that. But a long ponytail is hardly a change. She'll most likely dye her hair brown when she returns.