Slimming dress styles? Other tips?

I have that Ralph Lauren ruched cap sleeve in post #5 in both green and royal blue. I’ve worn it to graduations and reunions. It is so flattering!

One of the things I like about Modcloth is that they encourage purchasers to post photos of themselves in the dresses. Some people look great in them, others not so much. I think that woman in #13 looks pretty good in that dress despite being heavy. Actually, looking again, I think she looks better in it than the skinny model.