Well I was in a clothing store with my girlfriend and it was one of those where there is a central sitting area for the guys and the dressing rooms are around the edge of the room. She never wears panties so when she was trying on jeans I knew it would be a good show but she was clueless. I went in with her for a bit and when I left to go and sit down I left the curtain slightly open. I couldn't see in from where I was but when i walked around to where some of the other guys were sitting I got a great view of my girl's lovely ass on display to everyone. She had no idea they could see her so she tried on like four diffent pairs of jeans. The guys enjoyed the show believe me. When we got back to the car I told her and she hit me hard on the shoulder for not telling her. Then I asked her if the thought excites her and she turned red and turned away from me. I could tell she was thinking about it the whole way home. The sex that night was good and it led to me asking if she wouldn't mind showing her ass again where nobody would know her and if she could do it for 'me'. That's how these pictures came to be and we are nervous and excited about seeing them posted.