"For when the panties/pantyhose/bike shorts etc, shaped by the buttocks and the mons pubis, create a distinct three leaf clover shape. Notice that if the material stretches straight across between the two buttocks, that's not really a trefoil. You need the indentation between them."

TLDR: Makes the ass/crotch shape of clothes more defined

Can't believe I have to do this, but some bots have been collecting my example images and reposting some of them, so for a while, I will be watermarking them.

Trigger Prompt: trefoil