I think she's a beautiful girl and her style (or lack of) is her own business. Personally I like it--sure its juvenile but thats her whole act/her whole audience--it stands to reason.
Well...growing up is overrated as I always say. I don't know, so she is approaching 30, so what. The world is full of 30 year olds acting like 30 year olds and dressing like 30 year olds...its nothing to write home about. I say let people do their own thing and if dressing like a punk princess at 30 floats your boat, pays your bills, and doesn't harm anyone, why not.