Lucilla is just as troublesome as Denia, if not even more so. The character is split into multiple separate IBs and also has a second form, which made the whole process extremely time-consuming. I spent almost an entire day working on her.
In total, there are four parts: the NPC version, the normal-form body, the normal-form leg, and the Phase 2 body.
Because everything is split across multiple independent IBs, some toggle keys may occasionally conflict with each other. Or you can just choose the version you like and lock it. Just keep that in mind.
There is also a small amount of clipping with the skirt, but that's how the original model is as well.
As for Rebecca, she's just as absurd to work with. I'll deal with that later.
To be honest, I prefer Lucilla a lot more than Rebecca.
I put a lot of effort into this mod, and hope you enjoy it.
Toggle Key
5,6 - piercing
7 - collar
8 - belt & bra
9 - dress
0 - pants
p - garter
ctrl ↓ - shoe
ctrl → - sleeve
ctrl ← - bracelet
ctrl ↑ - hat
[ - Phase2 dress