Something that highlights my best features. I'd wear something tight fitting, because I'm always wearing bulky clothes that make me look fat when I have prominent curves and a flat stomach. It's a nice surprise.
For a nice dinner, I have several dresses. One of my favorites is a form fitting sleeveless cobalt blue dress. I usually wear low heels, some earrings (silver usually, either diamond studs or chandelier ones) and a simple silver bracelet or a small diamond ring.