Your buddy just asked you to stand up in his wedding, and now you're staring at his invitation trying to figure out what "semi-formal" means for your closet. So, do groomsmen wear tuxedos or suits? The honest answer is that it depends on the dress code the couple sets, not on personal taste or tradition alone. Formal weddings still call for a tuxedo. Everything else, from semi-formal to cocktail to casual, calls for a suit. Once you know where your wedding falls, the groomsmen tuxedo or suit question answers itself. The Quick Answer: It Depends on the Dress Code Weddings run on a formality scale, and that scale decides what the groomsmen wear. At the top, white tie and black tie call for a tuxedo. In the middle, formal and cocktail weddings usually call for a suit, sometimes a dark one. At the casual end, a suit is standard and a tuxedo would look out of place. So when someone asks what should groomsmen wear, the real question underneath it is simpler: what formality level did the couple choose? Couples usually list the dress code right on the invitation or the wedding website, so check both before you shop. Black Tie and Formal Weddings Call for Tuxedos If the invitation says "black tie" or "black tie preferred," the groomsmen should be in tuxedos. A black-tie dress code calls for a tuxedo specifically; even a dark suit doesn't meet the bar. This is where groomsmen formal attire etiquette gets strict: a black tuxedo jacket, matching trousers, a crisp white shirt, and a bow tie are the standard, not a suggestion. This is the clearest case in the whole do groomsmen wear tuxedos or suits debate: black tie means tuxedo, full stop. Evening weddings at upscale venues, hotel ballrooms, and country clubs tend to land here. If you're wondering whether a tuxedo for groomsmen is overkill for your friend's wedding, check the venue and the time on the invite. A 7 p.m. ballroom reception is a strong signal. Semi-Formal and Cocktail Weddings Call for Suits Most weddings today don't ask for black tie. Semi-formal sits between formal and casual, and it's one of the most common dress codes couples choose. For groomsmen, that means a well-fitted suit in navy, charcoal, or another wedding-appropriate color, paired with a tie and dress shoes. Cocktail dress codes follow the same rule. A suit and tie covers it, no tuxedo required. This is the range where most modern weddings, both indoor and outdoor, actually fall. If your invitation doesn't mention black tie anywhere, plan on a suit. What Most Weddings Actually Choose Today Here's the part most etiquette guides skip: the majority of weddings in 2026 skip formal and black-tie dress codes altogether. Couples are choosing semi-formal, cocktail, and daytime styles at a much higher rate than a decade ago, largely because they're easier for guests to plan around and more comfortable for a full night of dancing. That shift matters for the do groomsmen wear tuxedos or suits question. Statistically, the safer bet for most weddings is a suit. Tuxedos are reserved for the smaller share of formal and black-tie events. If you're the groom deciding for your whole party, a suit gives every guy in the lineup something he can wear comfortably from the ceremony through the last song, and can wear again long after the wedding is over. How to Read the Invitation for Clues Not every couple spells out the dress code in plain words, so if you're still unsure whether your invitation means do groomsmen wear tuxedos or suits, look for these context clues: Time of day. Evening weddings lean more formal than daytime ones. Venue. Ballrooms and formal estates suggest tuxedos; barns, backyards, and beaches suggest suits. Wording. "Black tie" or "formal" means tuxedo. "Semi-formal," "cocktail," or no mention at all means suit. The couple's own style. A wedding website or details card often states the dress code outright, so check there first. If the invitation is genuinely unclear, ask the couple directly. It's a normal question, and it's a lot less awkward than showing up in the wrong outfit. What This Means for the Groomsman Specifically If you're a groomsman trying to figure out your own answer to what should groomsmen wear, the responsibility isn't fully on you anyway. In almost every case, the groom picks the suit or tuxedo, the color, and the style for the whole party, and the groomsmen fall in line for consistency in photos. Your job is to get your size in, get fitted, and show up on time. That's exactly the problem we want to solve. The groom builds the group order once, invites the guys, and everyone gets automatic reminders, a system we break down in our guide to coordinating groomsmen suits. Getting the Whole Group Matched and Ready Once you know the dress code, matching the whole party is simple. Browse the Suits Collection for semi-formal and cocktail weddings, or the Tuxedo Collection if the invitation calls for black tie. Every option uses 4-way stretch fabric and a tailored slim fit, so the group looks sharp and moves comfortably all night, whether it's suits or tuxedos on the lineup. Buying instead of renting also means the suit doesn't disappear the day after the wedding. Guys keep it, wear it again, and skip the return-by-Monday scramble that comes with a rental counter. Key Takeaway So, do groomsmen wear tuxedos or suits? Tuxedos belong at black-tie and formal weddings. Suits cover everything else, which is most weddings today. Read the invitation, match the formality level, and get the whole group into the right look early enough that nobody's scrambling the week before. Build Your Group's Look →