While Tiviel might be sexy-cute with her tiny horns and her midriff-bearing shirt, and Vaeloth looks like he's just come out of a twelve-step recovery program for evil knights, Sinessa's schtick is that she's evil. It's right there in her name. Sinessa's not here to make friends -- or maybe she is, if you're willing to trade your soul.
Bob Ridolfi's Sinessa sculpt also isn't that interested in clothes. As a sorceress she probably doesn't need much, Sinessa only wears what she needs to, and that ain't much: some bracers, a neck covering, a flimsy sculpted bra, a loincloth and some boots. Unlike Tiviel, Sinessa's horns are large and in charge.
You could be forgiven for thinking that Sinessa's favorite sin is Lust, but with the three-pronged staff that appears to be made from some unlucky fellow's spine, I think it's more likely Pride. You can purchase this miniature at Amazon.