I know you've already got this opinion from others but I just wanted to concur with the others that jersey knit isn't actually that forgiving if you have a little pudge. It clings a lot and unless you have some friggin' rock hard and/or flat abs, it'll show that little bit of pudge around the waist line, not to mention undie/thong lines and/or big fat wedgies.
I would recommend an empire waist line dress as that tend to compliment a lot of people, and sticking with a fabric that drapes will and doesn't cling. Probably something a little bit thicker so it can hide stuff well.
I hope you find a nice dress that works and just be thankful you're not wearing this: