This was a high vote getter from me. I like it in B&W - one can "see" the blue sky without the color (OK, I can anyway), and I like the angle, the framing, the slight looking down at us, and her gentle bemused smile.
The top area of her chest is the lighest part in the photo so your eyes are drawn to that rather than the face of the model. I think the background may be too distracting.