I have no suggestions for you, but it reminds me of when my 30 year old ridiculously fit pro was helping me pick out dresses. He's great at it, but not necessarily aware of all concerns such as this. After I asked several questions about one dress on me, he, getting somewhat perplexed, asked, "what exactly are you concerned about?" Me: "Fat rolls showing on back." Him, after carefully checking it out under several different situations: "It's fine." Gotta love the guy.