Sort order: Secular on belt showing through download shirt.

Hi all, I've come here to get help on the secular of the belt showing through the shirt made by Rusty sims.

I've tried changing the sort order on the shirt but it doesn't fix issue when some of the other CC shirt's don't have this issue.

I think it may be the pants but they are from the game so it must be shirt causing this, Or is it something else?

Here's a link to the shirt if needed.