We both know its a little early, but the officiant asked me what I would prefer she wear. She said she has standard black robes, but she has had couples ask her just to wear a nice dress because they thought the robes were too formal. I had never thought of robes being particularly formal, I guess, but it's true that our wedding is going to be very informal. The dresses are short (even mine) no tuxes or even suits. I like the idea of the dress better, but I wouldn't want just any dress. Would it be okay to ask her if she has a dress in the wedding colors and if she doesn't have her just to wear the robes? For reference, the colors are dark grey and green with light pink , so it's possible she already has a dress but not a given by any means.