I use MogIt to look up and try on different armor to come up with my shopping lists for transmog sets I want to build. I really like the way that you can save the sets and bring them all up.
My question is this; Are there any add-ons out there that saves your transmog sets so you can go to the Transmog vendor and select a set and it's automatically puts on the clothes from that set? With a at least a dozen options from horded gear I like for each armor piece, putting together my sets can be a little confusing and involves a lot more time than it should trying to find which pants went with these shoulders...