Ok, it's been a while, but I tracked these down:
"High Society" set:
http://babedirect.com/galleries/high_society_by_met_art/
http://www.callistoweb.com/cuties/220/
Also Found some photos on Google image search for "met Decadence", but didn't find anthing that meets peachy post requirements. If anyone can find a TGP for Decadence, please post the link.
Still nothing final on what her met name is, but at least this is something new. Don't know why I didn't think of it before.
{Edit - this made a lot more sense when it was in the standalone "Lubasha" thread before it was moved into this one}