A great story. It's like the story of my ex. She's a polite and classy girl, never wear a skirt above her knee before and a good awareness of her skirt make it's hard to see her thigh. All of this makes her a "good girl" image for everyone.
We broke up and meet again luckily in a class work group. One day our group has a dinner. She wears a tight mid-thigh pencil skirt. The skirt is very short compare to her standard. She chooses to sit opposite me. This position will give me the best view of her face and a panties in triangle shape. First, she sits with her bag cover her legs so nobody can see her thigh. Until others in the group is gone just me and her. She then lift her bag to give me a perfect upskirt shot for a while. When doing this she looks to the other way.
This shatter the good girl image for me. I think she know that the length of her skirt and the sitting position will give me the best upskirt shot but she doesn't try to prevent or adjust her skirt. At first, the good girl image makes me imagine that she wears shorts under her skirt but she doesn't. I can see the detail of her panties and something underneath it clearly. She does all of this with the innocent face look at the other way.
Until now. I don't sure. It's on her purpose or an accident. I should ask her.