I am attending a wedding next week that said "Black Tie Optional" on the invite... I'm totally ok with wearing a pretty long dress and I'm imagining they will be pulling out all the stops but I'm not worried about that. The ceremony is at 2:30pm and the reception starts at 7pm. So if it's black tie optional, thats just for the reception? Do I wear a different dress for the ceremony? My date is in the wedding party and will be wearing a tux and we will be doing pictures I'm assuming with the family between the ceremony and reception. So my question is; should I wear a less formal dress for the ceremony and change into a party/black tie gown for the reception later on?