>>529673470
it's established in the lore that if nikkes see themselves as human they're less likely go hollow.
for example eating, even though their body doesn't need it, they need it mentally.
dressing up nikkes like whores makes them constantly emberassed and when they get used to it they become slutty, both traits that make them think they're human, and thus keep them sane

Dresses like a slut
Flaunt her ass around without care
Cucks her squadmate