An older teen side of my inner child is the memory of the fashion of office workers mostly female back then and to which a 'good girl' aspired and even looked up to as you started thinking a bit more about such concerns as getting a job or going to college.
A staple of my more formal wear is the Pencil Skirt of which this from Top Shop is good example.
It is a knee length pencil skirt with back zip fastening.
- 75% Polyester,23% Viscose,2% Elastane.Machine washable.
Worn with a classic plain blouse, belt and tights, it has that business like feel but at the same time approachable.