Whatever your personal style is, your dress needs to make you look and feel like a starits your big day, after all
You could also follow a silver and gold color scheme to keep it more on the classy side
Heres how the dress looks as-is versus with an underskirt (you can also layer a bell-shaped or full mini skirt underneath for a similar effect): I dont love fullness for every occasion (such as the office, or travel), so a poofy underskirt works well to slightly change up the look when appropriate
The cut says cocktail, but the fabric is casual
Mid-century modern architecture, pool days that go from morning to sunset, vintage shopping, incredible restaurants, and a pastel color palette that makes every photo look like it was shot for a magazine