https://wccftech.com/elden-ring-new-mod-transmogrification/

A new Elden Ring mod that has been shared online this week introduces some gameplay tweaks that make up for the lack of transmogrification in the game, allowing players to wear whatever armor they desire without having to deal with reduced defense stats and poise.

The ERTransmog mod removes weight, physical and magic defense stats from all armors and introduces tweaks to three Arsenal talismans, replicating the stats of heavy, medium, and light armor. This makes it possible for players to wear whatever armor set they want without having to sacrifice defense.