Recommend strength 1.0

Outfits Trigger

Casual

rcs casual, rice shower (umamusume),
animal ears, bangs, blush, bow, brown dress, brown hair, brown ribbon,
casual, collared dress, dress, eyebrows visible through hair, frilled dress,
frills, hair bow, hair over one eye, hair ribbon, hairband, horse ears, horse girl, horse tail,
long hair, long sleeves, puffy long sleeves, puffy sleeves, ribbon, tail, violet eyes, white hairband,

Race

rcs race, rice shower (umamusume),
animal ears, back bow, bangs, bare shoulders, belt, black bow, blue dress, blue flower, blue rose,
blush, brown hair, black legwear, brown thighhighs, collarbone, dagger, dress, dress bow, eyebrows visible through hair,
flipped hair, flower, fur choker, fur collar, hair flower, hair ornament, hair over one eye,
hat, hat flower, horse ears, horse girl, horse tail, knife, long hair, long sleeves,
off shoulder, off-shoulder dress, one eye covered, purple dress, purple eyes, purple headwear, rose,
sheath, sheathed, shoes, short dress, sleeves past wrists, tail, thigh-highs, thighhighs,
tilted headwear, very long hair, violet eyes, weapon,

Make up Vampire

rcs muv, rice shower (make up vampire!) (umamusume), rice shower (umamusume),
animal ears, bangs, bat wings, black bow, black bowtie, black skirt,
blue flower, blue rose, blush, boots, bow, bowtie, brooch, brown hair,
center frills, collared shirt, dress, eyebrows visible through hair,
flower, frilled hairband, frills, gloves, hair flower, hair ornament, hair over one eye,
hairband, halloween, high-waist skirt, horse ears, horse girl, horse tail,
jewelry, layered skirt, long hair, official alternate costume, orange bow,
puffy short sleeves, puffy sleeves, purple bow, purple eyes, purple footwear, purple gloves,
purple hairband, purple skirt, rose, shirt, short sleeves, skirt, spider web print, tail, violet eyes, white shirt,

School

rcs school, rice shower (umamusume),
animal ears, bangs, blue flower, blue headwear, blue neckwear, blue rose, blush, bow, bowtie, brown hair,
eyebrows visible through hair, flower, frilled skirt, frills, hair over one eye, hat, hat flower, horse ears, horse girl, horse tail, horseshoe ornament,
long hair, pleated skirt, puffy short sleeves, puffy sleeves, purple bow, purple bowtie, purple eyes, purple headwear, purple shirt, rose, sailor collar,
sailor shirt, school uniform, serafuku, shirt, short sleeves, skirt, thigh-highs, tilted headwear, tracen school uniform, violet eyes, white skirt, white thighhighs,

Using bag as a negative prompt could be better with School outfits prompt.