What are the best dresses for this kind of body?

An empire waist is elegant and lovely---fabric drapes and flows right under the bust to flow over and hide tummy problems and looks romantic.

http://en.wikipedia.org/wiki/Empire_silhouette

Purchase a loose dress, nothing too fitting. Another style you might like is a bubble hem, which also hides the tummy area and is a little bit more on the modern side.

You should take advantage of your long legs with a ballgown, A line dress, or, to show off, a shorter dress.

V-necklines are very flattering and slimming.

Something with a higher waist, that's flowy, or at least, not tight, but not poofy. It also helps if the waist has a wider band (if you know what I mean), because it balances out really well.

http://images.amazon.com/images/P/B000LB53LO.01-A1...

dresses like these are very slimming because the low cut brings attention upwards or to your legs, and the wrap in the middle creates the illusion of a tiny middle

your age?