Thanks everyone!
I picked the dress out on a whim in about half an hour flat. It was the first one I laid eyes on. I tried it on for fun, and it fit, so I bought it. Very happy accident.
The poor cake had a different kind of accident. I dropped the top tier when we were bringing it home, so we're going to have to order a fresh, small cake for our first aninversary instead of eating a frozen piece. (I don't understand how a cake with fruit fillings was supposed to last a whole year in the freezer, anyway, so good riddance!)
Here's a close up of the cake.