I'm always on the hunt for dresses with more of a 50's silhouette. I think most of Minneapolis is as well so they're hard to find especially in a larger size - women in the 50's were teeeeeny. While JoJo's didn't have exactly what I was looking for they did have this number:
Yep - its a maternity dress from the 60's. Create a waist and you've got yourself a shirtdress. Its amazing what a belt can do!