PhotoCamp London 2011 and one presentation was a live model photo shoot. The models, a man and a woman, were both professionals and it showed. They were very comfortable in front of the camera(s).
Unfortunately, the day was fiercely bright with a strong sun casting harsh shadows. Not the best light for fashion photography.
On the bright side, there were a lot of large, fluffy clouds dotting the Saturday sky. If possible, at times like this watch the sky, watch the clouds and shoot during those minutes when the day turns momentarily overcast.