I had a similar experience in a Dress barn a couple of weeks ago. All three SA's were fawning over me, bringing me dresses and outfits, asking me to model for them and then just sitting down in the mirrored modeling area just to talk. I spent several hours laughing and giggling with them. But somewhere in the middle of the whole thing Ali refered to me as "he".
At first this took me back. Then as I thought about it I decided she was not trying to be malicious or anything she just saw a guy in a dress. Her full sentence was "Doesn't he look gourgous in that dress?" The Manager of the store, who was also picking out outfits and sat down for a chat, apologised for Ali and asked what I liked. I honestly said I did not care, I prefer she but I know I am a he.
I was treated as one of the girls. We laughed, we told each other about our lives and families, and where we were going next. Even took some pics getting hugs from the adorable Ali. I even thought about pursuing a GG relationship with Ali but she was moving out of state in only a few days.
In all it just added to the reality that without surgery, weight loss, voice training, and smoke and mirrors, I am a pretty guy in a dress.