Formal Attire 101: What to Wear to a Formal Wedding

So, you received an invitation to a wedding and it requires "formal attire." While this is one of the most popular picks on the dress code spectrum, you might still be stumped on what to wear to a formal wedding and how it differs from other attire options, like black tie or cocktail. To help out, we tapped a few experts to break down formal wedding attire, including what it means, what to wear (and what to avoid) and how to accessorize. Plus, we've rounded up formal outfits that you can buy on the spot—no need to thank us.

In this article:

• What's Formal Attire for a Wedding?
• Where to Buy Formal Wedding Attire
• Women's Formal Attire for Weddings
• Men's Formal Attire for Weddings

What's Formal Attire for a Wedding?

"Formal wedding attire sits between cocktail and black tie on the wedding dress code scale. It's slightly more elevated than cocktail attire and a touch less dressy than [the attire for] black-tie nuptials," says Alex Rivera, a styling team manager at Stitch Fix. A call for formal clothes (similar to black-tie optional attire) offers a bit more flexibility than black tie, so ankle-length dresses and dressy separates are acceptable, as well as fitted, darker-hued suits paired with a crisp white button-down and tie. "If nothing else, ensure your dress is full length," advises Caitlin Elabassi, a designer for Petal & Pup. "This is one of the most important elements when it comes to a formal dress code."

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If you don't know what to wear as a wedding guest for a formal wedding, start by considering the venue and season. "These two important details will help provide an idea for the ambiance, the couple's personal taste and ensure you've dressed appropriately for the occasion," explains Rivera. For summer events, lighter fabrics and brighter colors are common for formal attire. On the flip side, darker shades, thicker fabrics and longer sleeves are the way to go if you're attending a winter wedding. Prioritize seasonally appropriate pieces that are elevated, but still feel like you.

When you're thinking about formal versus black-tie attire, you have much more flexibility when it comes to colors and embellishments. "Don't be afraid to have a little fun with your fashion, either through color or a playful print," says Gabrielle Hurwitz, a wedding stylist based in New York City. "I also love the idea of a jumpsuit, suit, or a patterned suit or tuxedo with a standard necktie rather than a bow tie." As for accessories, Hurwitz says details like colorful shoes, patterned ties, statement jewelry and fun sunglasses (for outdoor weddings) are all ways to add personality to your ensemble.

Overall, pick an outfit that you truly love and feel your best in, while still being respectful of the wedding dress code. As for colors to avoid for formal weddings, Rivera says guests should steer clear of "white-, ivory-, cream- or champagne-colored dresses and light-colored suits." Elabassi echoes this formal wedding attire rule: "As long as it's not white, most colors are safe. Guests can have much more fun with color, and many people are no longer following the traditional 'rules' of the past. If you're ever unsure, it's always best to check with the couple." (Psst: You can also check out the to-be-weds' wedding website for more information.) Additionally, it's best to know what clothing *not* to wear to a wedding so your outfit doesn't read as too casual. Some pieces to steer clear of according to Hurwitz: a cotton sundress or a sports coat with chino pants.

Where to Buy Formal Wedding Attire

Now that we've answered the question "what does formal mean," you're ready to start the shopping process. Read on to see a few of our go-to retailers for formal wedding guest attire.

Lulus

When it comes to affordable wedding attire, Lulus has you covered for any dress code—but especially formal. The retailer offers a range of formal dresses for weddings ranging from sizes XXS to 3X, many of which ring up under $100. Whether you want an outfit that's elegant and classic or something trend-forward and fun, you'll find it at Lulus.

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Reformation

While Reformation's dresses can fall on the pricier side (around $300), they're the kind you'll keep and wear for numerous occasions. Specializing in silky frocks, on-trend silhouettes and fun floral prints, this brand's formal attire options are effortlessly stylish. The best part? Many of the dresses are available in petite and extended sizes too.

Anthropologie

Anthropologie is a go-to destination for formal wedding attire, offering a dedicated guest section on its site with looks from elevated labels like BHLDN, V. Chapman, Mac Duggal and Elliatt. While you'll find styles fit for any dress code, the retailer has an impressive selection of formal options. Prices range between $150–$400, and you'll find sizes up to 22W in select styles.

Petal & Pup

The romantic and whimsical styles at Petal & Pup are gorgeous options for formal weddings, especially those with niche dress codes (like "garden party chic" or "vibrant tropical"). With fast and reliable shipping, affordable prices—most styles fall under $150—and an ever-evolving catalogue of trend-forward styles, you're sure to find the perfect formal wedding attire for a special event.

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Nordstrom

Need a place that has formal attire options you can pick up in-store or buy online? Then Nordstrom is the department store for you. They sell thousands of styles starting at $75, and you're able to filter by brand, occasion, price, color and much more. Bonus: You can get all your formal accessories here too.

The Black Tux

If you're not looking to splurge on a brand-new tux or suit, The Black Tux is an excellent option. The retailer offers a range of rental styles starting at $149, including everything from classic black tuxedos to playful, statement-making suits. Just fill out a quick survey, then try on different styles in the comfort of your own home. Prefer an in-person experience? Visit one of their many nationwide showrooms and get fitted by an expert.

Suitsupply

If you want a tux or suit that feels like it was made for you, look no further than Suitsupply. The retailer specializes in custom suits tailored to perfection in over 1,000 fine Italian fabrics, crafted and delivered within two to three weeks of placing your order. Prices for premade options start at $598 and increase depending on customizations.

SuitShop

If you're looking for formal wedding attire on a budget, SuitShop is one retailer you'll definitely want to consider. Offering the ability to purchase at rental prices, SuitShop has suits starting at just $199. Beyond their affordability, the suits are size and gender inclusive, meaning you can find an outfit crafted just for you. Beyond suits and tuxedos, they also offer vests, jackets, dress pants and accessories.

Indochino

With the help of Indochino's stylists in-store or online, you'll design your dream suit from scratch, choosing your preferred fabric, color, lining material, buttons, pocket placements and more. All customizations are included in the cost, allowing you to fine-tune every detail of your garment. Women's premium suits start at $499, while men's premium suits start at $799. Side note: This is a great place to shop for formal wedding attire if you're looking to invest in a closet staple that'll carry you through multiple special events.

Women's Formal Attire for Weddings

Formal attire for women can include floor-length and ankle-length dresses. That being said, you don't have to wear a dress at all because suits and dressy separates are also great options. "A jumpsuit is the perfect alternative to a dress and will provide ultimate comfort for a busy day of wedding festivities," adds Rivera. Check out our favorite formal wedding attire styles below.

Classic Sleeveless Maxi Dress

Photo: Lulus

You can't go wrong with Lulus formal dresses. This dress is ultra flattering and comfortable, thanks to the stretch-crepe fabric. It has an elegant sleeveless silhouette, a deep V neckline and a floor-length skirt for the perfect dose of sophistication.

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Silk Dress With A-Line Silhouette

Photo: Reformation

This Reformation number is the "it" girl of formal wedding guest dresses. From the effortless column silhouette to the matching scarf, this maxi-length pick will make you look undeniably elegant. As for variety, choose from nine solid colors and two prints.

Chic Flutter-Sleeve Gown

Photo: Anthropologie

Anthropologie formal dresses are great options if you're looking for simple, of-the-moment pieces. Crafted from 100% recycled fabric, this BHLDN dress is available in standard and plus sizes, and has a dramatic eye-catching neckline and voluminous flutter sleeves. It comes in a range of different prints and colors, making it a foolproof formal wedding guest dress for any season and venue.

One-Shoulder Jumpsuit

Photo: Petal & Pup

Dresses aren't your style? No problem. Petal & Pup has lots of fashionable ladies' formal jumpsuits perfect for weddings. Available in teal or black, this one-shoulder outfit has a chic neckline and a modest keyhole-like back detail.

Strapless Column Gown

Photo: Nordstrom

Wedding attire for women doesn't have to be black tie to be showstopping. This strapless number from Alfred Sung comes in three stunning colors (Deep Plum, Sage and Cognac) and has a uniquely sculpted bodice.

Velvet Maxi Dress

Photo: REVOLVE

If you're searching for formal wedding outfits for ladies for the fall or winter, a classic black gown is a great way to go. This one has a modern, square neckline and luxe velvet fabric, both of which lend well to a range of styling possibilities. Keep it simple with all-black accessories, or give it a festive feel with a metallic bag and pumps.

Plissé Dress With Sweetheart Neckline

Photo: ASTR the Label

Whether you want to show up in the lilac purple or seafoam green color, you're guaranteed to turn heads in this flowy formal frock. There's elegant pleating on the entire dress, and a small-and-delicate silver embellishment on the bodice. This is the perfect look for a summer wedding.

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Off-the-Shoulder Dress

Photo: ELOQUII

This stunning off-the-shoulder number from ELOQUII is sure to impress at your next formal wedding. With its body-skimming silhouette and dramatic statement sleeves, you'll be getting compliments left and right.

Maxi Dress With Flower Embroidery

Photo: BloomChic

Have a garden wedding on your calendar? Then you need to grab this mesh dress ASAP. The black fabric is the perfect canvas to make the colorful floral embroidery pop. Bonus: There's a tie detail in the back you can fasten into a cute bow, plus side-seam pockets.

EXCLUSIVE CODE: TK15 FOR 15% OFF AT BLOOMCHIC.

Men's Formal Attire for Weddings

Formal weddings are great because the dress code is fancy, but still flexible. Men can wear a tuxedo, but they don't have to—a dark suit and tie are also appropriate. Dress shoes fit the bill when it comes to footwear. Consider patent leather loafers for a tux or oxfords for a suit. A formal wedding is also the perfect time to break out the cuff links. "Pair them with a French cuff (a shirt with a double cuff), and ensure your sleeve extends slightly past the length of your jacket so the cuff links are visible," says Rivera.

Contemporary Wool Tuxedo

Photo: Nordstrom

You can't go wrong with a timeless black tuxedo for men's formal wedding attire, and this top-rated option comes in short, regular and long sizes. From the peak lapels to the luxurious silk accents, you'll be the best-dressed guest at the party. Elevate your outfit with a bow tie and a pair of dressy oxfords or loafers.

Classic Charcoal Suit

Photo: The Black Tux

Charcoal gray is another foolproof color choice for formal wedding attire for men. Crafted from 100% super-fine merino wool, this suit has pants available in both regular and slim fits. The best part? The Black Tux makes shopping for formal attire easy with the option to rent or buy, depending on your preference.

Structured Three-Piece Suit

Photo: Azazie

Azazie launched their suit collection in June of 2025, and the wedding world has been better because of it. This three-piece suit has everything you need. The jacket, pants and vest size come in a slim or regular fit, the outfit is wrinkle resistant and it's available in 23 colors.

Tailored-Fit Suit

Photo: Jos A. Bank

This tailored-fit suit is an online exclusive you have to buy. Available in a classic black hue, the jacket and pants come in numerous sizes and have some stretch for added comfort. One customer even left a review saying that the suit was excellent quality and that the price was fantastic.

Semi-Stretch Suit

Photo: Bonobos

Made with wool that has a hint of stretch, this classic suit will become a staple for formal weddings of any season. There are 10 colors to choose from, and with three different blazer styles and pant options to pick from, getting that just-right fit is a breeze.

Tweed Suit

Photo: Bonobos

If you don't want to add another black suit to your closet, olive green is a great alternative color option for formal attire (though this particular style also comes in five other hues). This dapper pick from SuitShop is crafted with textured wool and a classic notch lapel, and it'll look stunning whether you're headed to a rooftop wedding in the city or an intimate affair in the countryside.

Sustainable Tuxedo

Photo: Men's Wearhouse

You can always go for a traditional black tuxedo, but why not switch it up? Grab this formal outfit in navy blue, so you feel dressed up and a little more laidback at the same time. This timeless pick has satin notch lapels and a slim silhouette. Bonus: It's made with 45% recycled fabric.

Custom Formal Suit

Photo: SuitSupply

Want to do something different with your formal wedding attire without standing out too much? Try this burgundy option from Suitsupply, which has a classic tailored fit and is made from beautiful Italian fabric. Best of all? It's completely customizable, from the jacket lining to the buttons.

All-Season Suit

Photo: Indochino

When in doubt, a black suit will always be a safe bet for a formal wedding. This one is custom-made to your measurements with high-quality, comfortable wool fabric built for long days (and lots of time on the dance floor).

Slim Italian Tuxedo

Photo: Banana Republic

Looking for a tuxedo specifically made for slim body types? Then this one from Banana Republic is perfect for you. This tuxedo is simple, yet has a luxe feel, and can be shipped directly to you or picked up in a nearby store.

Additional reporting by Chapelle Johnson and Kate Boswell.