Oh, I didn't mean she should dress like a teen. She certainly didn't dress like that even back in 70s comics. She dressed like a fashionable, beautiful young woman. Not high-fashion style, but certainly well-dressed.
I'll try to find some of those images and post them later. The looks will be dated, of course, but they were trendy when the comics were published.
Of course, in my list of priorities for what I'd like to see the writers/artists offering Jean, fashion does not rank high. But, you know, it would make me happy to see her dressing up again. It's silly, I know. But it'd make me smile.