Really? It's like the very definition of a genuine, involuntary smile as opposed to the controlled, deliberate one we usually see, if you study that kind of thing (genuine vs fake smiles). The way the muscles in her face, around her eyes scrunch up, the corners of her eyebrows lower, you can see that she is genuinely delighted by something. She can't do this one on purpose, it's more rare. I prefer this kind of smile to the more common, deliberate one which celebrities and tv stars use all the time. It's like joy is just bubbling up out of her.
Well, anyway, some more pics, courtesy of @Tatiana_984, also known as kulitat on flickr.
Ana waits when badly shanked ball will fall down pic.twitter.com/hYTNgG0ZHl Ana Ivanovic by Kulitat, on Flickr
Seems that Ana added about 2 kilos to hers weight last 2-3 months, and which is better, seems that almost all of that mass goes into hers muscles!
I agree with this, if she continues to keep doing it then she will look healthier again. This is a slow process so she needs to train alot harder in her fitness before she can be known as a contender again.