This was a genuine moment when Alexia's father came into the room and saw his daughter in her dress for the first time. Up until that point Alexia had been very relaxed - all smiles and laughter, but seeing her dad caused her emotions to get away from her for a minute, and she had to try to stop herself bursting into tears and ruining her makeup!
This is an example of a situation where I knew roughly what was going to happen next. Alexia got herself ready and called her dad into the room. I just had to position myself so I could get a picture. I couldn't know that it would make a great picture, I just made myself ready in case it was.