Weddings are simultaneously the most magical and stressful day in a woman’s life. Months and months of planning that culminates in just a few hours can push even the chillest person into bridezilla mode. Between floral arrangements, cake samplings, bridesmaid gifts and, of course, dress try-ons (which blur together after the 13th gown or so), there’s a lot of room for error, to say the least. While no wedding style is immune completely, you can breathe easier knowing certain mistakes are actually quite simple to avoid. Here, a checklist for what not to do.