Have tried all sorts. The trans is desaturated, have set all my dials to black, then to white, even tried cahnging the whole background of the trans to black, still get the shadow of the belt I was trying to remove. Help please.

The greatest part of wisdom is learning to develop  the ineffable genius of extracting the "neither here nor there" out of any situation...."

Try - Object Color: white, Highlight Color: black, Ambient Color: black. And make sure both Trans (Min/Max) sliders are full on. That set-up worked for me when I had the same problem.

You might also try clicking on the offending part and then click off "casts shadow" when the box pops up. Also, make sure the Highlight slider is at 0.

I don't know but looks really cool too.

Also double check to make sure your transparency falloff is set to 0

I've tried all these, bar one. Here I go showing my ignorance again, just when I thought I had got it sussed. How do I click off cast shadows for just one part of the figure? I did try making it invisible, but it comes up as abdomen, and I lose part of the dress as well. I am pulling my hair out now.

The greatest part of wisdom is learning to develop  the ineffable genius of extracting the "neither here nor there" out of any situation...."