Well i guess she would have a lot of stretched out clothes ,,,,

Assuming I had a girlfriend that was roughly the same size as me, which is already two very unrealistic scenarios to begin with, and assuming she would also be willing to wear my boring old rags for a week, I would probably enjoy the experience. There's something about have a brand new wardrobe and getting to play around with your image that leaves a lot to intrigue and creativity.

The caveat is that I almost definitely would not want to wear women's clothes to work or in public where I'd draw unwanted attention and possibly even scorn. Women's clothes were not designed with my body in mind

This would not be the fun is first appears, my clothes fit him, he usually buys women's jeans anyway, because they're cheap, and he doesn't wear underwear.
so the change for him would be clean looking tee shirts and jeans, meanwhile my tee shirts and jeans would be oil stained and torn.
when he's not dressed for work he wears a kilt! Again, no fun!

im a foot taller and 70 lbs heavier than my wife. she might have a scarf or a hat that would fit but thats about it.

Plus, her clothes look way better on her.

I won't wear anything and we would be naked in a room. Enough food to survive. 😛

Her clothes wouldn't fit. Not sure I could my legs into a pair of her jeans.

I'm not going out, nothing would anywhere near fit me.

I'd realise, I have gone completely insane. 🤔