My wife and I wear the same sizes for most things, except shoes. She says I can borrow any clothing I want unless she has it on right then
We have a shared collection of nightgowns - there are a couple she gave me that she found less comfortable for her (but I like them).
I can fit into all of her tops, skirts, dresses, and jumpers. Her pants and shorts fit, but for me, pants are for boy mode. Sunday night's outfit is almost always what she wore to church in the morning.
The rule we have on new clothes bought for her is that she gets to wear them first.
When I buy femme clothing, I usually get her input first and I generally don't stray too far from her taste for dress/skirt/top. The exceptions are animal prints - she wouldn't buy any on her own, but I like them. I have a couple of very inexpensive animal skirts she doesn't borrow (but she did wear my animal print shell top once).
She does on occaision borrow a top or skirt from me (most of them were originally hers).
When it comes to lingerie, I was borrowing her full slips a lot but now my collection is slowly increasing.
My bra collection started with her cast offs (she doesn't like underwires but has borrowed back a Bali underwire once or twice). Once in a while I wear one of hers (and even helped break in a new one once).
I hope to see replies from both CDs & SOs.
Jadeanne