Download and install CBBE 3BA (3BBB) via your mod manager ( Vortex or Mod Organizer 2 ). The BodySlide Workflow: "Building" Your Body
3BBB is not a standalone mod; it is an enhancement for the (Caliente's Beautiful Bodies Enhancer) base body that adds advanced physics to the breast, belly, and butt (hence the "3B" naming).
You generally need both CBPC (for collision-based "jiggle") and FSMP (Faster HDT-SMP) for more complex, fluid movement.
Install XP32 Maximum Skeleton Extended (XPMSSE) . This provides the necessary "bones" for the physics to attach to.
To use (often referred to as 3BA or "3 Breast Bone Body") in Skyrim , you must first install its foundational requirements— XP32 Maximum Skeleton Extended (XPMSSE) and a physics engine like FSMP (Faster HDT-SMP) —then use BodySlide Outfit Studio to build the body and outfit meshes that support the additional physics bones. The Core Setup: What You Need First