MogIt is a transmog preview and collection addon that lets you browse armor and weapons by slot, color or set and preview full outfits on your character, saving favorite looks for later.
How to use:
Type /mogit or click the MogIt minimap/LDB button to open the browser, pick a slot and filters, then Ctrl-click items to add them to the preview model; use the wardrobe/save tools to store and load your favorite transmog sets.
