Applies to UI at Appearances tab -> Sets -> "Visual view" button.
What I would LOVE is option to view all the sets as a different race and gender, selectable via drop down menu, similar to wowhead.
A HUGE struggle for me is picking a race/gender based on how transmog looks on them.
I always have to make trial accounts for each combination and check each set manually.

I think this would be a fantastic addition for transmog lovers.
Is this something you're interested in adding?

Thank you :)