The Modern Guide to Event Dress Codes

An event invitation arrives, the date goes straight into your calendar, and then you reach the line that seems to raise more questions than it answers: the dress code.

Black tie. Cocktail. Formal. Garden party. Smart casual.

While dress codes are designed to make choosing an outfit easier, the wording can sometimes feel vague, particularly when different venues, seasons and types of celebrations each bring their own expectations.

The best place to begin is always the invitation itself. The design, venue, time of day and overall tone of the event will usually provide just as much guidance as the dress code written at the bottom.

Here is our guide to understanding the most common event dress codes and dressing for them with confidence.

White Tie

White tie is the most formal dress code and is generally reserved for highly traditional evening occasions, state events, formal balls and particularly grand weddings.

For women, this traditionally means a full-length evening gown paired with refined jewellery, formal shoes and an elegant evening bag. Hair and makeup are usually polished and elevated.

For men, white tie calls for a black tailcoat, white wing-collar shirt, white waistcoat, white bow tie and formal black shoes.

This dress code is rare, so when it does appear, it is best to embrace the formality rather than underdress.

Black Tie

Black tie signals a sophisticated evening celebration. It is commonly chosen for formal weddings, galas, awards nights and milestone events.

Women will generally wear a floor-length gown, although an elegant midi dress or exceptionally polished cocktail dress may also be appropriate depending on the venue and invitation.

Men are traditionally expected to wear a tuxedo or dinner suit with a formal shirt, bow tie and polished dress shoes.

Black tie does not mean the outfit needs to feel overly traditional. Modern silhouettes, rich fabrics, statement accessories and thoughtful tailoring can still feel personal while respecting the occasion.

Black Tie Optional

Black tie optional offers guests slightly more flexibility while maintaining a formal standard.

Women may choose between a full-length gown, sophisticated midi dress or elevated cocktail dress.

Men can wear either a tuxedo or a dark formal suit with a tie.

The key is to remain closer to black tie than cocktail attire. While the tuxedo itself may be optional, a polished and formal appearance is still expected.

Formal

Formal attire is similar to black tie optional, although it often allows for a little more interpretation.

Women may wear a long gown, structured midi dress or refined cocktail dress in an elevated fabric. Men will usually wear a dark suit, formal shirt, tie and dress shoes.

The venue and time of day are particularly helpful here. An evening wedding at a grand ballroom may lean closer to black tie, while an afternoon formal celebration may allow for lighter colours and slightly softer styling.

Cocktail

Cocktail attire sits between formal and semi-formal. It should feel celebratory, polished and considered without requiring a full evening gown.

For women, a midi dress, shorter cocktail dress, tailored jumpsuit or elevated separates are all suitable options. Fabrics such as satin, silk, crepe and structured suiting work particularly well.

For men, a well-fitted suit with a collared shirt and dress shoes is generally appropriate. A tie may be included depending on the event.

Cocktail attire is one of the most versatile dress codes, but it should still feel noticeably more elevated than an outfit worn to dinner or drinks.

Semi-Formal

Semi-formal attire is polished but slightly more relaxed than cocktail dressing.

Women might wear a midi dress, sophisticated knee-length dress, tailored jumpsuit or coordinated separates. Men may choose a suit or tailored trousers with a blazer and collared shirt.

Daytime semi-formal events often suit lighter colours and softer fabrics, while evening events may call for deeper tones and more structured pieces.

Lounge Suit

Lounge suit is a traditional dress code that appears frequently on wedding and corporate invitations.

For men, it generally means a classic suit with a collared shirt, tie and formal shoes. A tuxedo is not required.

For women, a polished midi dress, cocktail dress, jumpsuit or elegant separates are appropriate.

Despite the word “lounge”, this is not a casual dress code. It is best interpreted as traditional formalwear without the requirements of black tie.

Garden Party

Garden party attire is elegant, fresh and usually suited to a daytime outdoor setting.

Women may choose flowing midi dresses, soft tailoring, floral prints, light colours and breathable fabrics. Shoes should be selected with the surface in mind, particularly when the event is held on grass. Block heels, wedges and refined flats are often more practical than stilettos.

Men can wear a lighter-coloured suit, linen or cotton tailoring, a collared shirt and loafers or dress shoes. Depending on the invitation, a tie may be optional.

Garden party attire should feel polished while still complementing the relaxed beauty of an outdoor setting.

Beach Formal

Beach formal combines elevated dressing with fabrics and silhouettes suited to a coastal environment.

Women may wear a flowing maxi or midi dress in a breathable fabric, paired with refined sandals, wedges or block heels. Heavy embellishment and shoes that sink into sand are generally best avoided.

Men might choose a lightweight suit, linen trousers with a blazer or a collared shirt with tailored trousers. Light neutrals, soft blues and natural fabrics work particularly well.

Although the setting is relaxed, beach formal is still a formal dress code. Swimwear, casual shorts and everyday beachwear are not appropriate unless specifically requested.

Smart Casual

Smart casual is one of the broadest dress codes, but the aim is to look intentional and well put together.

Women may wear a relaxed midi dress, tailored trousers, a skirt with an elevated top, a jumpsuit or refined separates. Men can choose chinos or tailored trousers with a collared shirt, knit polo or blazer.

Denim may be acceptable for some smart casual occasions, although it should be clean, structured and styled thoughtfully. When in doubt, tailored trousers are the safer choice.

Smart casual should feel comfortable and contemporary, but never careless.

Festive Attire

Festive attire encourages guests to embrace colour, texture and personality while remaining appropriately dressed for the formality of the event.

Women may incorporate metallics, sequins, rich colours, statement accessories or playful silhouettes. Men might choose a classic suit with a patterned shirt, textured jacket, colourful tie or pocket square.

The season and occasion will guide the styling. A festive Christmas event may invite jewel tones and sparkle, while a summer celebration may suit brighter colours and lighter fabrics.

Themed Dress Codes

Couples and event hosts are increasingly choosing personalised dress codes such as “European summer”, “modern romance”, “old Hollywood”, “coastal chic” or “all black”.

These descriptions are designed to shape the atmosphere of the event rather than prescribe one exact outfit.

Look for visual cues in the invitation, wedding website, venue and colour palette. Guests do not need to wear a costume or interpret the theme too literally. Instead, use it as inspiration for your colour choice, silhouette, fabric or accessories.

For example, an old Hollywood dress code might inspire a timeless gown, classic tailoring and polished accessories, while European summer may suggest linen, soft colours and relaxed elegance.

Can You Wear Black to a Wedding?

In most modern weddings, black is completely acceptable and often one of the most elegant choices, particularly for cocktail, formal and black-tie celebrations.

The main exception may be a daytime wedding where the couple has requested a particularly light or colourful palette. Even then, the invitation will usually make this clear.

Styling can also soften the look. Consider lighter accessories, delicate jewellery or a fabric that feels appropriate to the season.

Can You Wear White to a Wedding?

Unless the couple has specifically requested an all-white dress code, white, ivory, cream and bridal-looking shades are generally best avoided.

This also applies to dresses that may appear significantly lighter in photographs than they do in person.

A small amount of white within a print is usually acceptable, provided the overall outfit does not resemble bridal attire.

What Should You Do When the Dress Code Is Unclear?

Begin by considering the venue, start time and style of invitation.

A Saturday evening celebration at a luxury hotel will generally require a more formal outfit than a midday event at a private home. A traditional letterpress invitation may suggest a more classic dress code, while a colourful destination invitation may allow for more playful styling.

You may also check the event website, as hosts often include additional guidance, inspiration imagery or practical information.

When deciding between two levels of formality, it is usually better to be slightly overdressed than noticeably underdressed.

Dressing With Confidence

A dress code is not intended to remove personal style. It simply creates a shared level of formality so that every guest feels comfortable and the celebration feels cohesive.

Choose something that respects the occasion, suits the setting and allows you to feel like yourself. Thoughtful details, beautiful tailoring and considered accessories will always make more impact than following a trend that does not feel natural to you.

The most memorable event style is rarely the loudest. It is the outfit that feels effortless, appropriate and entirely your own.