Except for shoes, I can fit into my wife's things and she can fit into most of mine.
By agreement, there are a very small number of items of hers that I don't borrow. I don't wear her pantyhose until she decides that they are worn out for her use. Her legs are shorter than mine and I don't want to stretch or ruin them. I have a few pairs of my own, but usually wear gartered stockings when I dress femme.
She has pierced ears and I don't, so we have separate earring collections.
Our shared nightgown collection fills 2 dresser drawers.
She does borrow a dress from me to wear to church once in a while.
A couple of times I bought her bras that were a little too snug for her, so I broke them in by wearing them a few times using my slightly larger breast forms to stretch them out a little bit - a tough job, I know, but I did it for her .
Jadeanne