That is the way she wore all of her tops that day. I asked her about it and she said that is the way she liked to wear it. Senior photos in our area are completely different from when I went to school.
Are you using off-camera lighting? It appears your light source is camera left and about camera level. Also, how do you determine the light intensity? Are you using your light in manual or TTL?
I think I know the answers to these questions, but until I know for sure my opinions about your lighting are weak .... not that they are so valuable anyway. ;-)
Lighting is harsh. If on camera flash I would turn it down so it only acts as fill. In TTL mode try -1.5 or even -2. It take very little to fill if you are exposed for existing light.
