Double-check your Dijon mustard, too
If you like to wear casual clothes and never would think to wear a dress then stick to jeans and a cute top
They were tea or ankle length maxi dresses (or skirts) in homey prints calico, gingham checks, patchwork, denim, plaid, or tie-dyed for the day and velvet for evenings
Wear the cardigan and put a belt on top to make the cardigan look more tailored
Rather than a single measurement, focus on behavior and balance: if the dress rides up when you walk or sit, requires constant adjusting, or lacks any balancing element (coverage, structure, or dressy fabric), its more likely to read inappropriate for a wedding