Empire dresses are an option because they create a waistline under the bust, and the skirt flows from the waistline. This style is also good because it doesn't distort the natural balance of your shape.
Wrap dresses with A-line skirts are a good choice too. You can use the wrap tie to cinch your waistline.
Color block dresses with a waistband that's a darker color than adjacent colors define your waistline by making it appear to recede. Although it's often more difficult to find this style of dress, you can usually locate a color block dress that's right for you. If you sew, consider a color block style the next time you make a dress for yourself.
Finally, for special occasion dressing, flatter your figure with a corset-style dress, which has a vertically paneled and boned midriff. This style is especially nice for the bride who has a rectangle shaped figure. Bridal wear is frequently custom made, so if you're working with a dressmaker, offer a sketch or picture of a similar gown from a bridal magazine to show her the style you want.
In our example above, the AK Anne Klein color block dress (Buy Direct) from Nordstrom emphasizes the waist with a wide black ruched band while the square-neck top and A-line skirt maintain the balance of top and bottom.