This isn't about what you think about others flashing skin, it's more a question about you personally - what age do you start to feel mini skirts and cleavage are inappropriate for you personally?
When I was younger I'd wear so much skin baring clothing (in many cases too much skin for sure!), nowadays I do still bare some skin but am much more conservative, and feel awkward in short skirts for a variety of reasons (not even mini just shortish ones)
What age did you start to feel age crept into your clothing choices?