This is the "Shadow Assassin" outfit created by COCO , a well-known modder in the Skyrim community famous for high-detail, stylized female armors.

Usually includes a "BodySlide" project, allowing you to adjust the armor to fit your specific character's proportions.

Since this is a popular armor set, here is what users generally say about COCO's work:

Features 2K or 4K textures with excellent specular maps (how light reflects off the leather/metal).

It is a "fantasy-ninja" or "assassin" aesthetic, typically featuring dark leather, intricate straps, and glowing elements. It often comes with multiple color variants (usually black, red, or white) and optional accessories like masks or specialized daggers.