[MWS] [LD] Guests not wearing formal/specified attire at wedding/funeral

My sims are doing this too. None of the guests are turning up in their formal wear when the attire is unticked when creating the wedding event. Not only that but they’re turning up in randomly generated outfits. I’ve got sims turning up in bath robes, the outfits that sims wear when they.’re “living” in the park, winter fest outfits etc. I’ve been using the small talk interaction to change them all to formal but by the time I’ve done that the wedding is almost over! I’ve got no cc or mods installed and I’m a pc player.