Rent the Runway bought them out so there's no longer a Go Try It On app. Rent the Runway has an app but I've never used it. Also try Style Book. I think its similar to what you're looking for. Hope this helps
That one is more of a catalog than advice. I thought I'd post one of DHs pics. It's amazing how a back ups will work! He never agrees with me, bless his lack of fashion sense having heart!