I noticed there wasn't an Illustrious model of Stella, so here's a quickie. I used a mix of official 2D art, 3D screenshots from the game, and some fanart to make this version of her.\
Usage tips: the keyword ganguro will help with her skin tone (dark-skinned female may also help, but it may make her skin too dark). For size/scale, try keywords like minigirl (probably won't be allowed directly on CivitAI because of it confusing it with a minor/underaged person), mini person, and size difference.
Obligatory self-promotion: consider supporting or commissioning me at https://www.patreon.com/MetalChromeX so I can continue making cool crap for you all to enjoy for free!