I noticed this too! I had gone to Julian’s house and Snake was visiting. Julian’s wardrobe specifically contained Snake’s clothes, none of which I have ever seen Julian wear so I know Snake didn’t gift them to him somehow. I thought it was somehow linked to the fact that Snake was visiting but then I went to Reneigh’s house and she was alone but had Julian’s clothes in her closet! Luckily it seems to be pretty much just a visual glitch since they still wear all the right things.