The bulge in the skirt and pants is scaleable with the iv_kuritto bone. I tried my best.
TBSE-XL by Cheembs. IVCS2 Required along with TBSE Textures.
Toggles - Skirt - Underwear (I don't recommend, but included anyways) - Leg Warmers
Issues - None of the original shapekeys apply to the attire. I messed them up and didn't feel like redoing everything from scratch. - The bulge for the skirt may behave strangely depending on C+.