I'm invited to a casual back yard wedding and was intending to wear a flowered sundress. I just learned that the brides will also be wearing flowered dresses. I made mine myself, using some vintage fabric, so it's unlikely I'll resemble either of my friends, but I don't want to distract at all. Should I choose a different outfit? The alternative dress is one I wore at an event connected to my own wedding. Although it's decidedly un-bridal, both the brides and several guests at the wedding were at that event. Would that be in poor taste?