I just ordered this dress from Target, and I think I will get good use out of it.
If you're looking for a wear around the house, throw on flip flops & run some errands casual comfy dress, this may work for you as well. It comes in several colors shown below. I chose navy and am happy with it.
This will work best on those with a small chest, as it is low in the front. Could also make a cute bathing suit cover up.