And the simple approach is.....
At least for department stores, is not even do fem. I went a good 40 years picking out womens clothes and going to the mens dressing room, in male mode. Usually hiding the lot by a very large pair of trousers.
In girl mode, yes powder is the key. My biggest problem in girl mode is no different then most others, avoiding lipstick or foundations stains as you pull stuff over over your head. Loosing my hair is a totally different issue