
I've used xivmodels.com some to look at items, but it doesn't give you a base frame to see them on and it can be a bit clunky to maneuver the "model" around. It's also a bit outdated and a quick look-see at it now shows that they don't plan on updating it due to technical problems. I believe it's the same model viewer that Warren's site leads to (and that he's had problems with), as well. That's the only one I know about, unfortunately, but it might be a good starting place? 
The Market Boards idea works pretty well too. As does just examining someone who's wearing something that looks interesting to you and using the Try On option there to see how you look in it. The only downside to this method is that you can't alter the colors and such to match the rest of your getup... so you have to use your imagination a bit there.

The Market Boards idea works pretty well too. As does just examining someone who's wearing something that looks interesting to you and using the Try On option there to see how you look in it. The only downside to this method is that you can't alter the colors and such to match the rest of your getup... so you have to use your imagination a bit there.