Is this a formal wear kind of thing? Inconceivable!

We’re geeks and getting married at a working ranch with animals, dirt, and all. We’re also fairly informal people. So for our wedding, we might be looking pretty spiffy. Guests are encouraged not to wear open-toe shoes or anything too dressy. Other than that, we insist you come as you are or as you like.  Oh! but we are not responsible for what happens if you decide to wear a red shirt.