She seems to have a wet patch on the left side of her dress. It can't be a lactating nipple because it's not aligned properly. I suspect she may just have got a little excited at the prospect of being the centre of attention and slavered a little droplet of saliva. --- it can easily happen!

Turning to the performance itself, i thought it was well thought through, ( she clearly has a firm understanding of what turns men on.) She provided all the required sensuous angle shots with great professionalism, so much so that i found myself stroking my erection in appreciation__!!