If passing is the goal, dress like a stereotypical religious conservative woman in her 40s.
Floor length skirt, sensible top.
Here's the reason: Conservatives are used to seeing frumpy women who don't look like super models. They will also see you as less "other".
Also, try wearing your hair down.
I know this sounds conformist, but it helps you pass.
- A stealth commie transwoman in a very conservative area.
I need a sponsor in Denmark.