Natural and sweet ... love it
i'll agree to a certain degree with ilblissi that you can tell she just took her bra off, but i think it gives it a freshly removed feel, kinda like you walked in on accident just as she was getting ready for a shower or something...but thats not what i'm here to comment on. I'm here to comment that she's got a beautiful face.
i like this shot, but i think it would be better if you had waited a little while to take it after she took her bra off, or edited out the lines her bra has made on her side and back. that's just my 2 cents.