Formal clothing for a 20 year old?
So, my cousin is getting married this summer, in what looks to be a fairly formal evening event, and I have no idea what people wear to these types of things. I normally don't worry about fashion, but there will be many pictures taken and I really don't want to look like I was trying to go to the beach or prom instead of this wedding. I also want to look like I'm 20, not 40.
I'll probably be sewing the dress myself, since I have much more time than money, but I need a general idea of appropriate styles. It's been more than two years since I've had to wear nylons or makeup, which should give you an idea of how clueless I am. I can make historically accurate clothing from anytime between the 15th and 19th centuries, but something simple like this, and I'm lost. . .