Instead of describing this photo, I'll talk about a little trick. See how the background is all blurry and quite flat (not complex)? This happens when you use a very low number for your F-Stop. In this case, it was 1.4 on the 50mm lens - although this would have also worked with the more inexpensive 1.8 lens. Anyway, if the person (or object) you are shooting is a lot closer to you than the distant background, the entire area back there will be very washed-out and flat. Behind her, there was actually a lot of complexity. There was a park with trees and sky and lights and everything, but it all gets washed away with this technique.
She was there for a wedding shoot. One of my "things" I like to do is crash wedding shoots and get my own stuff. I mean, I'm cool about it and don't disturb their flow. I smile a lot so they know I'm not a threat... 99% of the time, these women are not models or anything (and neither is she), but I like how people can kind of go into "model" mode by accident when in these situations.
Beijing, China