What semi-formal dress is best for me?

I'm 5'3 and I weigh 120 pounds. My body shape is an hourglass/pear shape with athletic legs and arms. I have very fair skin with thin, long, curly brownish/blondish/reddish hair. I can straighten it, of course, but in case you wanted to know. Any semi-formal dresses to wear to an 8th grade farewell dance? Preferably a solid color.