preppy formal dresses Zapaka Women Navy Prom Dress A Line Spaghetti Straps Party Dress with Appliques, Hot Pink / US16W The Tala Dress exudes timeless elegance with a preppy style perfect for business casual Preppy Party Outfits - Jillian

Sheer, Illusion, and Lace Details Many Jovani designs mix fabrics, especially on the bodice and sleeves

This style works well if you want a defined waist with a skirt that offers room to move

The result is polished, modern, and utterly comfortablean outfit that lets you focus on the day rather than fussing with your clothes

PromGirl Bridesmaid Dress - Chiffon Green Mermaid Strapless Floor-Length Matcha Dress - Azazie Sorrel Elegant two-piece satin gown with a lace-up corset top and floor-length mermaid skirt

It does take place in posh Napa Valley, after all, culling a crowd that is far more subdued than, say, EDC (see below)