If you are overweight then the empire line cut should be your best friend. It's perfect as it is tight around the bust and flares out from just underneith hiding your wobbly bits. Heels will add height and will make you appear slimmer. Also hiding your arms may make you feel more comefortable as those wobbly bits will be out of sight. This navy dress is a perfect example. You can also however wear a strappy empire dress and add a bolero. Try to wear long necklaces or dainty ones as chunky necklaces will cut you up and seem unflattering. I have also added a broach for extra detailing on the dress to draw your eye away from the stomach. Also try not to wear small bags as it will make you seem larger, opt for a medium size.