What to Wear as a Best Man — Complete Outfit Guide for Every Wedding

What you wear as a best man matters. You're front and center all day — photos, ceremony, reception. Getting it right isn't complicated, but it does require a few decisions made early and with intention.

This guide covers every formality level with specific outfit guidance, fit advice, and the do's and don'ts that actually matter.

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The First Rule: Coordinate, Don't Match

Your job as best man is to look intentional and complementary — not identical to the groom, and not so different that you look out of place. Ask him what he's wearing early, and build your look around it.

"A charcoal suit next to a navy suit reads as deliberate. A charcoal suit next to another charcoal suit reads as forgetting to coordinate."

The second rule: get it tailored. Even a rented suit can be altered slightly. The fit is what separates a man who looks dressed from a man who looks sharp.

What to Wear at Every Formality Level

// Black Tie

The Tuxedo. No Substitutes.

Black tie is the clearest dress code in existence. The tux is non-negotiable — a dark suit, no matter how nice, is the wrong call at a black tie event.

SuitBlack or midnight navy tuxedo — single breasted, peak or shawl lapel

ShirtWhite tuxedo shirt with bib front — French cuffs only

TieBlack silk bow tie — tied by hand, not pre-tied

ShoesBlack patent leather cap-toe Oxford — mirror polish

DetailsBlack cummerbund or waistcoat, white pocket square (flat fold), silver cufflinks

// Do

Have it tailored — even rentals
Wear the bow tie by hand
Polish shoes the night before

// Don't

Pre-tied clip-on bow ties
Brown shoes at black tie
A regular suit instead of a tux

// Formal

The Dark Suit Done Right.

A formal wedding calls for a sharp suit — not a tux, but not just any suit either. The cut, fit, and color are everything.

SuitCharcoal grey or navy — single breasted, two buttons, slim or regular fit

ShirtWhite or pale blue — spread collar, no button-down at this formality

TieSilk tie — solid or subtle pattern, width matching lapel

ShoesBlack or dark burgundy Oxford — mirror polish

DetailsWhite pocket square, dress belt matching shoes, optional watch

// Do

Get the suit tailored at shoulder and waist
Wear a tie bar with a silk tie
Iron the shirt morning of

// Don't

Button-down collar at formal events
Clip-on ties
Wear the groom's exact suit color

// Semi-Formal

Sharp Without the Pressure.

Semi-formal gives you room to show some personality while still looking like you took it seriously. This is where most best men land.

SuitMedium grey, light navy, or tan — slim or regular fit, subtle patterns are fair game

ShirtWhite or light blue — button-down collar acceptable here

TieOptional — if wearing, a knit or textured silk. Skip it outdoors or in heat.

ShoesBrown or burgundy Oxford — adds warmth and personality

DetailsPocket square in white or pattern, watch, dress belt matching shoes

// Do

Show some personality in color or texture
Brown shoes with grey or tan — classic
Skip the tie if it's outdoor or warm

// Don't

Jeans, regardless of how nice
Novelty socks as your only personality
Forget to steam the jacket

// Casual / Outdoor

Relaxed. But Intentional.

Casual doesn't mean whatever. It means no tie required — but you still need to look like you planned it. Linen, earth tones, and clean lines.

SuitLinen or cotton in beige, stone, sage, or tan — or a blazer with fitted chinos

ShirtWhite or light linen — open collar, no tie needed

TieSkip it. Open collar is the move.

ShoesLoafers, desert boots, or clean leather sneakers for beach — no black shoes

DetailsLinen pocket square, simple watch — keep accessories minimal

// Do

Embrace linen — it's meant to wrinkle
Loafers with no-show socks
Steam it morning-of

// Don't

Dark suits at daytime outdoor weddings
Jeans or shorts regardless
Over-accessorize

Fit: The Most Important Thing Nobody Talks About

A $300 suit that fits well looks better than a $1,000 suit that doesn't. Fit is everything. Here are the checkpoints:

Shoulders: The seam sits at the edge of your shoulder. No fabric bunching. This is the most important fit point — it can't be easily altered.
Chest: The jacket closes comfortably at one button with a fist of room.
Sleeves: The jacket sleeve shows about half an inch of shirt cuff.
Trousers: Should sit at the natural waist with a single clean break at the shoe. No pooling.

Rent or Buy?

For black tie, renting is often the smarter move unless you attend multiple formal events per year. For semi-formal or casual, buying a suit in the $200–$400 range that you'll wear again is almost always better value than renting.

The best rental option: The Black Tux. The best buy in the mid-range: Bonobos, J.Crew, or Suitsupply. Budget option: H&M or ASOS with alterations.

Seasonal Considerations

Spring/Summer: Breathable fabrics — linen, cotton, or tropical wool. Lighter colors are appropriate.
Fall: The sweet spot for menswear. Heavier fabrics, richer colors, more texture options.
Winter: Heavier wool, deeper colors. A well-fitted overcoat for outdoors.

Get Your Personalized Style Guide

Input your wedding formality, body type, budget, season, and the groom's attire — the Style Guide builds a complete outfit breakdown, piece by piece, with color palette, do's and don'ts, and shopping links for every budget.

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