Asuka only for now, but it can be ported to the other female characters.
Extract and put the zC_ASK_JUN_BISHOUJO_BASE_P.pak and one of the _CST_ .pak files in your Tekken 7 ~mods folder. Each _CST file enables the mod to one full body costume. Use only one of them to avoid this mod conflicting with another mods you have installed. There is a variation for DLC costumes (i.e. Hikari Costume) and a variation to the regular ones for who don't have DLC costumes (i.e. Halterneck Dress).
Full Head: Skull Mask Full Body: Halterneck Dress or Hikari Summer School Uniform
Mesh mod by Tekken-XPS.
Jun Kazama (C) Namco