I was out and about (drab) today doing a few chores when I encountered a tall middle aged GG. She was roughly 6' but certainly not what I would call a bean pole. She was a female of say 5'6" of average build just scaled up. Watching her from behind it would be easy to see how a CD with a bit of hip padding, decent wig, appropriately dressed for the time and place could look just the same and not attract a second glance just as this GG did. People just thought, tall lady and carried on.
OK getting the facial aspect is a harder ask. Good makeup skills can go a long way but for those of us 5'9" and above and having a typical male physique only so much can be achieved.
I'm writing this because much has been discussed about "passing" and going out recently and I think it's worth reinforcing that for the vast majority of us truly passing is all but impossible. However that doesn't mean we can't have a good stab at it and get a good way there to the casual observer. And this is what I've come to realise. Face to face I'm read. It hasn't stopped me being able to walk through a crowd of fellow shoppers and not attract a sideways look or second glance.
Add to this that acceptance of difference in life styles is more widely accepted/acknowledged being out in public isn't as scary a prospect as many seem to think. Set realistic targets for yourself in how you look and go from there.