I tried to use kxpb 's plain bra Lora (<a target="_blank" rel="ugc" href="https://civarchive.com/models/610530/plain-bra-plain-panties-illustrious-pony">https://civarchive.com/models/610530/plain-bra-plain-panties-illustrious-pony</a>) and was having issues with the style being caked in. I went ahead and made my own.

Plain Female underwear

I trained this with each of the base colors in illustrious:aquablackbluebrowngreengreyorangepinkpurpleredwhiteyellow

Files with SHA256: 8db67e48d6585298f3d15f1eb5ea56c3dc7e39e2a8cd912f38b56a3d3f1b3872