This happens to me if I choose customized wedding event. If I choose the other option to Plan Wedding Event, the guests show up in the formal wear that is in their inventory. If I choose customized and don't select any type of outfit or if I select polished, they show up in random outfits, including costumes. The problem with choosing Plan Wedding Event is that I do not have options on the arch to tell guests to sit or throw rice or do anything.
This wedding is just starting. I changed the bride and groom and his parents already since they are all in the same household but they also came in goofy outfits. It is a heatwave day and you will see the one in the knit cap in the foreground, a witch outfit and the one that looks disguised is not famous at all. These are played families as well so none of these guests have these outfits in their inventory of outfits.
And more guests arriving. I have no mods or CC in my game and I play on PC.
