Sorry. Yes... I'm using one of several models that came with Poser 13, but especially Roxie and Pauline.

And I will go check out RenderHub and ShareCG. And how would I go about finding other sites worth looking at? I think I've seen ShareCG mentioned somewhere, but I think it was in passing, on some other subject.

I took a look at those two sites -- and it looks like I can find something there that will work well. Thanks again. 

One of the robes I like is for Stephanie 3, and she's almost $50, but DAZ says she works with Poser, and the robe says it's for her (and it's only about $9), so I may try that. On the other hand, inspired by the conversations here, I may have found a Satanic robe (free!)  somewhere (will have to go back and find it again), but it was, I think, under Renderosity Freestuff. 

Anyway, I'm feeling like I now have enough information to make it all work. Thanks again.

And WOW -- what those two sites have. For a few $$. But WOW!