Partial nudity where the only piece of upper clothing is a tabard, mainly to show off sideboobs and thighs.
Pixiv has a tag for:
naked_tabard Yakumo_Yukari: 前掛けだけ紫
The pixpedia article(JP) is here.
naked_tabard Yakumo_Ran: 前掛けだけ藍
The pixpedia article(JP) is here.
naked_tabard Ibaraki_Kasen: 前掛けだけ華扇
The pixpedia article(JP) is here.
naked_tabard Junko_(touhou): 前掛けだけ純狐
The pixpedia article(JP) is here.
The following tags are aliased to this tag: nude_tabard (learn more).
This tag implicates tabard (learn more).