It's a pretty disturbing Polish Deviant artist's work called, "Milky Nun". The original was a lot more...salacious (Meaning if you'd asked, "Got milk?" the answer would have been, "Barely").
So I PG'd it and reworked the textures, eyes and crucifix and added a more "Josie" look by redrawing the amulet in her Con demo cosplay and adding another Deviant Art background called, "Desert Planet".
Finally, I liked Axxo's red lettered slogan and logo and recreated it.
Originally I thought about just putting, "Wail" at the bottom and no other Sins reference but I wanted an identifiable Rebellion promotional look.
Basically I was thinking of a nun's habit, Dune's Bennet Gessiret and the Wail of Sacrifice when I started and this is what it led me to.