Do you have the wardrobe plus mod by braeven installed? You can get it from the in game mod hub.
yes I have that. It shows up in my mods but has empty across the mod picture in my installed mods. None of the clothes are in my wardrobe.
Make sure you have the wardrobe plus mod and the wardrobe plus example mod. Each are in the in game mod hub. I have heard of instances were if you didn't have both that clothing packs wouldn't show up. Let me know if this helps.