Yes. We have all been victims of the formless dress. Perhaps you bought it online and it had more shape there. Or maybe it was a gift. Or you were going to take it to the dressmaker and never did. But with this summer dress trend, there is a solution.
With ladylike dressing making a comeback, modesty has returned. Tops are not tight-fitting. Neither are skirts. But right around the waistline is. All that is needed is a great belt. Form some dresses, the belt is built in. Like this Anthropologie cutie. 
But for others, like this dress, also Anthropologie, a belt needs to be added. The best belt for this kind of styling would be thin and minimal. Not something that distracts from the dress or is too chunky. REmember that part of the blouse will hang loosely over the belt.
This styling is great for all body types. For stick-shaped women, it is loose in chest area and tight right above the hips so that way it gives some curves. For curvy women, it accentuates your hips and conceals your upper body. The look works for everyone and is adorable!