If costumes are up for sale with professional vendors then yes..they are fair game. BUT....
I'm sorry but I don't think it is right to post photos like this with the wearer. It would be better to block out the face if you really feel driven.
It would be very embarassing if she were looking in on this thread. We have all made costuming mistakes and
that one isn't that horrendous after all.
Please leave individuals alone..it could be YOU!
When all is said and done, beauty or otherwise is in the eye of the beholder.