costumer problems

I'm really amused that I'm going to a wedding tonight and cannot figure out what to wear. I have a lovely evening outfit for every era but...the 21st century! Tell me I'm not the only costumer this happens to. I've suspiciously eyed my magenta regency dress...my titanic not-an-evening-dress and i guess I'll just wear a cotton sundress and be on the casual side. Ah well, at least I'm amused by myself.