Meshes (body shape) have a total of over 21k vertices - compared to the modest 1750 vertices that are present in the original body - for optimal smoothness / evenness of body shapes. By default, there are three nude body styles that require nothing more than fitting, as well as three underwear styles for these body shapes.
CBBE is a Fallout 4 original female body replayer for all female adult characters (player and NPC) that is fully customizable using the BodySlide tool.