I'm not totally "age appropriate" unless you mean the age I present at and not the age I am.
As for the mini's well, again, to each their own, but when you dress in a manner that is obviously too young for your presentation then you are just showing off and inviting ridicule. Of course some go the "I don't care, I wear what I want" route and that's up to them, but for me I feel it not only opens them up to comment, but does so for the general group as well.
I've seen girls out in public here wearing tutu's and such shopping at Dress Barn and it just makes me wonder where their self-esteem level is.