Minecraft 1.20.2
Cosmetic Armor Reworked Mod – Wear Armor for Looks Without Stats
The Cosmetic Armor Reworked mod lets you wear one set of armor for protection and another set or clothing just for looks. So, you can stay safe with strong armor like diamond, but appear as if you're wearing weaker armor like chainmail.
The mod's interface lets you wear armor but hide how it looks, keeping your character skin visible! You can do this by clicking a small box in the top left corner of the cosmetic armor slots. It can also trick others into thinking you're not protected.
This mod works with other mods that use armor. So, you can mix different options while keeping the same level of protection. You can even wear mob heads for a completely different look without losing any protection.