What to Wear to a Wedding as a Guest: The Complete Dress Code Guide

Wedding season has a way of sneaking up on you. The invitation arrives, you RSVP yes without thinking twice, and then a week before the big day you're standing in front of your wardrobe wondering what "semi-formal" actually means and whether your favourite dress is too much, too little, or just wrong for a 2pm ceremony versus an evening reception.

You're not overthinking it. Wedding dress codes are genuinely confusing, and getting it right matters — you want to look and feel amazing without outshining the bride, freezing on a lawn, or being the only guest in the wrong register. Here's how to read any dress code and land on something that actually works.

Black Tie

The most formal code you'll see, usually reserved for evening weddings at hotels, country clubs or grand venues. Think full-length gowns in rich fabrics — satin, velvet, structured silhouettes. This isn't the time for florals or cotton; go for something floor-length and polished from our Wedding Guest Dresses collection.

Formal / Black Tie Optional

A step down from black tie but still dressy — floor-length is safest, though a dressy midi can work if it's clearly elevated (think sequins, structured tailoring, or a statement fabric). This is exactly the space our Wedding Guest Dresses collection is built for.

Semi-Formal / Cocktail

The most common wedding dress code, and the one that trips people up most. Midi or knee-length dresses, jumpsuits, or a dressy two-piece all work. Avoid anything too casual (jersey, denim) or too bridal-adjacent (all-white, anything resembling a bridal gown). Our Wedding Guest Dresses collection is curated specifically around this dress code, so it's the fastest place to start if this is what you're working with.

Casual / Beach

Usually daytime, often outdoors. Flowing midi dresses in lighter fabrics, wedges instead of heels (your feet will thank you on grass or sand), and softer colour palettes. Comfortable enough to wear for hours, dressy enough that you're clearly there for a wedding and not brunch.

The Golden Rules, Whatever the Code

Never wear white, ivory or anything that could be mistaken for bridal from across a room. Skip anything so bold it could compete with the wedding party's colour scheme if you know it in advance. And always check the venue and time of day — a 6pm ballroom wedding and a 2pm garden wedding can carry the same dress code on paper but look completely different in practice.

However the invitation reads, comfort matters as much as the dress code — you'll be in this outfit for hours, through a ceremony, photos, dinner and dancing. Start with our Wedding Guest Dresses collection, filter by the formality you need, and you'll have this sorted well before the day arrives.