I think the most important thing here is that your comfortable. Not comfortable in the dress but with yourself in the dress. There is nothing worse than being self conscious and it will ruin how you look. I always tell anyone that asks me what to wear to something, that these days you can wear just about anything you like as long as you feel good and are confident in it. So if you can put on that dress and feel great about how you look and feel, wear it. If not,find something else. As for the size issue, have you ever seen in the front of Us magazine the who wore it best section? The size 2 girl doesn't always wear it best, the confident stylish girl does! Have fun!