The simplest ladies' Wedding outfit that many people target as a default is:
Bridal Shirt, Tailored from Ornamental Fan
Long Dress, from Sunflower or Fairy Rose and dyed White
Bridal Veil, from Pearl
optional:
Crystal Shoes, but you can't see shoes anyway in the Long Dress so no biggie if you don't have them. Very nice if you get married in a Skirt though!
Simple Dress (Honey) and even
Genie Pants (Ancient or Starfruit) dyed White are reasonable pants options.
I don't like the Wedding Shirt much so there are all sorts of other options, dyed White or maybe a nice muted or pastel color if you find White boring:
Strapped Top (Coral, Nautilus, Sea Urchin) is a favorite for many but I don't like it much either
Gold Trimmed Shirt (Dwarf Scrolls) is very nice with some flair, I see why you like it
Tube Top (Sea and Super Cucumbers) is also popular but I don't like strapless
Sailor Shirt (many Fish, look it up)
Silky Shirt (Radish Salad) has a nice high waist belt with copper accent
Button Down Shirt (Artichoke, Beet, Bok Choy, Broccoli, Eggplant, Pumpkin, Yam)
'80s Shirt (Cactus Froot), for a saucy off the shoulder look
Shirt and Belt (Carrot, Cauliflower, Garlic, Green Bean, Hops, Kale, Parsnip, Potato, Taro Root, Tea Leaves, Unmilled Rice) has a gold belt buckle but the neck and beltlines are lower than the Silky Shirt
Shirt and Tie (Bruschetta)
Shirt with Bow (Orpiment) has a subtle design on the front
Tank Top (Radish, Cabbage, Squash) sounds informal but matches the Long or Simple Dresses nicely in white
Some fun non-White options:
Dark Highlight Shirt (Life Elixir/Monster Musk/Oil of Garlic) kinda works as a corset with dyeable trim
Midnight Dog Jacket (Squid Ink) is a better corset
Studded Vest (Obsidian) makes a great corset