Ugggghhh!!! The Clothes!!
Go to Google and type "clothing exchange after divorce". You'll find a number of frustrated parents (both men and women) who haven't been able to constructively solve this little issue.
I'll admit it. I'm one of them. It's one of those nitpicky things that for way too long, I haven't quite been able to let go.
My children are with their father, the Goblin King, a full 50% of the time. We each have a full wardrobe for them in our own homes. I dress them in clothing from my home and prepare a list as part of our agreed e-mail exchange which I send to him. I also return any clothing or items that were from his home on the last exchange.