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I have had girls change at my place, and also arrive changed.
It often depends on their circumstances.
My trans girlfriend (now ex) was 24/7 and so this question did not arise.
The most important thing is what type of person you are, how you treat others.
Everything else can be worked on and improved as the relationship progresses.
You have to start somewhere.
What you need to do before meeting a guy is to agree on what you want to do.
If you want the meeting to be purely social, with nothing physical, then say that beforehand.
It is your right.
Let them know if you are nervous about the meeting, so they know how to behave.