I want to relate my experience Friday night while out with two girls from here, AllieSF & Suzanne F and Suzannes' wife.
We went to a lower Pacific Heights neighborhood bar to listed to a friend sing and once at the bar we decided we were hungry, but the bar did not serve food, but there was a pizza place a few doors down, so I grabbed my purse, no coat, just as pictured.
The restaurant was busy with people waiting for tables as well as in line to order take out. I got in the take out line and had a great conversation with the girl in front of me and her BF and not a double take or question about "why".
When it was my turn to order the girl taking orders said she'd be right with me (she could not multi-task) and eventually, the owner got behind the counter, took my order, asked my name and also asked if I was at the bar a few doors down. I replied yes and he said he would deliver the pizza. I paid for the pizza and put a few $'s in the tip jar, at which point the girl that asked me to wait, said thank you very much Rachael.
There was post earlier about being out and normality and it is true. Just be yourself, initiate conversation and you'll have a great time.