Bikini A-Chan
Original tiddie-size from the Animu (pic with the yellow background)
No horse dude, just do a normal one (you can leave the face blank, i really don't care)
Same position as the last pic, bikini top either fully undone with a tiddie grab at one side, or partially on done with no grab (really dunno just do whatever you feel like)
Normal Bikini bottom, doesn't need to have that skirt thing (or just move it so it doesn't cover anything) and the middle part slipped to the side