What to Wear to a Summer Wedding as a Guest: A Hamptons Dress Code Guide

A Hamptons wedding invitation usually means sea air, long summer evenings and a dress code you’ll want to get right. Couples put a lot into the day, and The Knot’s 2026 Real Weddings Study found the average U.S. wedding cost $34,000 in 2025, or about $292 per guest.

Dressing well is an easy way to honor that effort. Here’s what to wear to a summer wedding on the East End, from beach ceremonies to black-tie estates, plus where to shop.

What Should You Wear to a Summer Wedding in the Hamptons?

Start with the dress code on the invitation, then adjust for heat, sand or grass and a cooler evening by the water. For most East End summer weddings, that means a breathable midi or maxi in a light color or print, with shoes that can handle a lawn.

Daytime and beach weddings lean relaxed, while evening estate and club weddings lean formal. When in doubt, dress one step up rather than down, since it’s easier to add a wrap than to fix looking underdressed.

Which Dresses Work Best for Summer Wedding Guests?

Floral midis, flowing maxis and soft solid colors are the easiest summer wedding guest looks. They feel festive, breathe well in the heat and look lovely in daylight photos.

Oh Pretty’s wedding guest dresses, for example, focus on corset midis and colorful floral maxis priced from about $225 to $329. The brand says they’re designed to help guests stand out without upstaging the bride.

What Does Each Wedding Dress Code Mean?

Each dress code tells you how long and how formal your outfit should be. The Knot’s guest attire guide breaks them down like this:

•       Black tie: A floor-length formal gown.
•       Black tie optional: A floor-length gown or an elevated midi.
•       Cocktail: A formal midi or shorter dress that doesn’t touch the floor.
•       Semi-formal: An elegant midi, wrap dress or jumpsuit.
•       Beach or resort: Floral maxis and midis in light fabrics, with dressy flat sandals.
•       Casual: A long sundress with polished accessories.

What Should You Wear to a Hamptons Beach Wedding?

Choose a breezy midi or maxi in cotton, linen or chiffon, and pair it with dressy flat sandals instead of heels. Sand and wind make stilettos and heavy, trailing hems a bad idea.

Keep hair and accessories simple, since ocean breezes can pick up quickly. A light wrap or pashmina helps once the sun goes down over the water.

What Should You Wear to a Vineyard or Garden Wedding?

Go for a floral or pastel midi with block heels or wedges that won’t sink into the lawn. Vineyard and estate weddings on the North and South Forks often pair a ceremony on the grass with a tented reception, so plan for both.

Soft corset bodices and tiered skirts suit these romantic settings. Bring a cardigan or cropped jacket for later, when the evening air cools off.

What Should You Wear to a Black-Tie Summer Wedding?

Black tie calls for a floor-length gown, even in July. Choose a lightweight silk, satin or chiffon so you stay cool through a long evening.

Jewel tones, deep florals and elegant solids look polished after dark. Add refined jewelry and a small clutch, and leave cotton sundresses and flat sandals at home.

What Colors Should Wedding Guests Avoid?

Skip white, ivory and cream unless the couple asks for them, since those shades are traditionally the bride’s. A floral print on an ivory base is usually fine, as long as the overall look reads as colorful rather than white.

Check the invitation or wedding website for a color palette, too. Some couples ask guests to avoid the bridesmaids’ color or to wear black for an evening reception.

How Early Should You Shop for a Wedding Guest Dress?

Order your dress four to six weeks before the wedding. That leaves time for shipping, a try-on with your shoes and alterations if the hem or straps need a tweak.

A floor-length gown may need hemming to the height of your heels, so bring the exact pair to your tailor. If you have several summer weddings, shopping early also gives you more sizes to choose from.

Where Can You Shop for Summer Wedding Guest Dresses?

These six brands cover every summer dress code, from beach casual to black tie. Here’s how they compare.

Prices and sizes were checked on each brand’s website at the time of writing and may change.

Oh Pretty — Women’s Fashion Boutique

Oh Pretty — women’s fashion boutique — has a wedding guest edit of 34 styles, mostly floral midis and maxis plus corset midis in shades like blush, lilac, mint and blue. The brand describes the collection as quietly luxurious looks for different seasons and formality levels.

Price range: about $225–$329. Sizes: XS–XL (about US 2–12). Shipping: free standard US shipping in 3–5 business days. Returns: 14 days from delivery. Best for: Garden, vineyard and beach weddings. Less ideal if: You need sizes above a US 12, or you want to avoid ivory entirely, since a few prints sit on ivory or cream bases.

Lulus — Budget-Friendly Wedding Guest Dresses

Lulus has more than 1,300 summer wedding guest styles, most priced between $69 and $99. It’s a smart option if you have several weddings on the calendar.

Price range: up to about $128. Sizes: XXS–3X. Best for: Cocktail, semi-formal and beach dress codes on a budget.

Reformation — Silk and Knit Dresses, Including Black Tie

Reformation’s wedding guest shop has about 220 styles in silk, knit, woven and cotton, plus a dedicated black-tie edit. Bra-friendly designs and petite sizing help for long evenings.

Price range: about $218–$498. Sizes: XS–3X, plus petites (XSP–XLP). Best for: Polished midis and gowns for cocktail and black-tie weddings.

House of CB — Corseted Cocktail and Evening Dresses

House of CB is known for sculpted corsetry and body-contouring shapes, a good match for cocktail and evening receptions. Its dresses run from about $199 for minis to $599 for embellished gowns.

Sizes: XS–L+, with cup options on some styles. Best for: A structured, glamorous evening look.

FARM Rio — Bright Prints for Daytime and Beach Weddings

FARM Rio’s Brazil-inspired prints and breezy shapes fit relaxed daytime and beach weddings. Its dresses range from about $198 to $1,310.

Sizes: XXS–XL, some 2XL. Returns: 30 days for unworn items with tags. Best for: Colorful guests at casual or beach-formal weddings.

LoveShackFancy — Romantic Maxis for Formal Garden Weddings

LoveShackFancy’s wedding guest edit is mostly silk, lace and chiffon maxis, priced from about $445 to $1,995. It’s a natural fit for formal garden and estate weddings.

Sizes: XXS–XXL (US 00–14). Best for: A statement maxi for a special celebration.

Final Thoughts

The right summer wedding guest outfit starts with the dress code, then accounts for sand, grass and a cool evening breeze. Choose breathable fabrics, skip white and wear shoes you can dance in.

Whether you choose a floral midi from Oh Pretty, a silk gown from Reformation or a statement maxi from LoveShackFancy, dressing for the setting shows the couple you came to celebrate.