Formal Attire 101: What to Wear to a Formal Wedding

So, you received an invitation to a wedding and it requires "formal wedding attire." While this is one of the most popular wedding attires on the dress code spectrum, you might still be stumped on what to wear to a formal wedding and how it differs from other formalwear, like black tie or cocktail. To give you a helping hand, we tapped a few experts to break down formal attire for weddings, including what it means, what to wear (and what to avoid) and how to accessorize. Plus, we've rounded up outfit examples—including dresses, jumpsuits, suits and tuxedos—that you can shop on the spot. Read on for our expert advice.

In this article:

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

What is 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 a black-tie nuptial," says Alex Rivera, a stylist at Stitch Fix, a personal styling service. Formal wedding attire (synonymous with 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.

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While shopping for formal wedding outfits, 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 example, for summer events, lighter fabrics and brighter colors are common for formal attire. On the flipside—if you're attending a winter wedding—darker shades, thicker fabrics and longer sleeves are the way to go. In summary, prioritize seasonally appropriate pieces that are elevated and fancy, but still feel like you.

Unlike 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 a fun color or playful print," says Bridal Stylist Gabrielle Hurwitz. "I also love the idea of a jumpsuit, suit or a patterned suit or a tuxedo with a standard necktie rather than a bow tie." As for accessories, a "colorful shoe, patterned tie, statement piece of jewelry or a fun pair of sunglasses (if the wedding is outdoors)" are all ways to add personality to your ensemble, according to Hurwitz.

Overall, pick an outfit that you truly love and feel your best in, while still being respectful of the couple's attire request. As for colors to avoid for formal weddings, steer clear of "white, ivory, cream, or champagne-colored dresses and light-colored suits," continues Rivera. You should also avoid pieces that may read as too casual, such as a "cotton sundress or sports coat with chino pants," advises Hurwitz.

Now that you're familiar with formal wedding attire and what it means, it's time to dive into our top outfit picks! With the guidance of our experts, we've searched high and low for the best formal wedding outfits for every style, from chic black jumpsuits to sleek patterned suits.

Where to Buy Formal Wedding Attire

To help kickstart your shopping process, read on for 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 floor-length dresses ranging from sizes XXS to 3X, many of which ring up under $100. Whether you want elegant and classic or something trend-forward and fun, you'll find it at Lulus.

Reformation: While Reformation's dresses can fall on the pricier side (around $300), they're the kind you'll keep and wear for seasons to come. Specializing in silky styles, on-trend silhouettes and fun floral prints, this brand's formal attire options scream "It girl." The best part? Many of the dresses are available in petite and extended sizes, too.

Anthropologie: Anthropologie has become a go-to for formal wedding attire, offering a dedicated "Weddings" section on its site. While you'll find styles fit for any dress code, the retailer has an impressive selection of formal options. Prices range from $78 to $798, and you'll find sizes up to 26W.

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 700 fine Italian fabrics, crafted and delivered within two to three weeks of placing your order. Prices start at $499 and increase depending on customizations.

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 fit survey, then try on different styles in the comfort of your own home. Prefer an in-person experience? Visit one of their 36 showrooms and get fitted by an expert.

Women's Formal Attire for Weddings

Formal wedding guest dresses include both floor-grazing gowns and elegant ankle-length frocks, so pick the hemline you feel best in. That being said, you don't have to wear a dress at all. "A jumpsuit is the perfect alternative to a dress and will provide ultimate comfort for a busy day of wedding festivities," says Rivera. We're also big fans of suits and other dressy separates. Check out our favorite styles, below.

BHLDN Ruby Twist Halter Satin Gown in Navy

Photo: Anthropologie

Here's a classic formal wedding outfit that'll help you channel your inner Sofia Richie Grainge. Crafted from sleek satin charmeuse, this BHLDN dress is available in sizes 0 to 26W and boasts a classy twist halter neckline that skims the hips and hugs the waist. It comes in a range of different prints colors, making it a foolproof wedding guest dress for any sophisticated soiree.

Lulus Melora Sleeveless Maxi Dress in Black

Photo: Lulus

This Lulus gown is the definition of formal wedding attire. The dress is ultra-flattering and gives the body a beautiful shape, all thanks to the stretch crepe fabric. The tall-friendly frock has an elegant sleeveless silhouette, a deep V neckline and a floor-length skirt for the perfect dose of sophistication.

STAUD Casey Dress in Bronze

Photo: Shopbop

Have a fall or winter wedding coming up? This strapless sequin dress will fit the bill. The floor-length column silhouette exudes elegance, while bronze sequins give it a glamorous (but not over-the-top) touch. Pair it with a faux fur wrap for chilly ceremonies or let it shine on its own with simple accessories on warmer days.

ELOQUII Dramatic Ruffle Gown in Black Onyx

Photo: ELOQUII

This stunning one-shoulder number from ELOQUII is sure to impress at your next formal wedding. With its dramatic trapeze silhouette and ruffled asymmetrical hemline, you'll be getting compliments left and right. Want something a little brighter? It also comes in Bright Orange and Red Dahlia.

Petal + Pup Ricki Maxi Dress in Midnight Indigo

Photo: Petal + Pup

Effortlessly elegant, this wedding dress for a formal wedding is simply gorgeous. The plunge neckline, voluminous short sleeves and gracefully draped bodice define this refined number. Style it with dangly earrings and chic mules for a standout wedding guest ensemble.

Mac Duggal Satin Bow Long Sleeve Column Gown in Olive

Photo: Nordstrom

Attending a formal winter wedding? This elegant green gown is sure to fit the vibe. Its pronounced shoulder panels, exaggerated side bow and thigh-high slit make it a fun yet sophisticated choice. If you're looking for another color, it's also available in Ocean Blue, Chartreuse and Black.

Significant Other Demi Backless Long-Sleeve Column Gown

Photo: Anthropologie

This formal satin wedding guest dress is a stunning choice for fall or winter nuptials. The highlights of this piece are the full-length balloon sleeves, dramatic open back and twisted bodice that flows to an elegant column silhouette. Choose from four other dreamy hues: Black, Medium Pink, Light Blue and Orchid.

ASTR the Label Monroe Dress

Photo: REVOLVE

With its draped one-shoulder detail, flattering silhouette and front slit, this light blue gown from ASTR is perfect formal wedding attire. It also comes in Deep Cornflower Blue, so you can choose the color that best suits the season and your preference.

Reformation Winslow Dress in Cayo

Photo: Reformation

This Reformation number is the "it" girl of formal wedding dresses. From the flattering wrap silhouette to the deep V-neckline and flowing sleeves, you'll look undeniably elegant in this maxi-length number. As for colors, you can opt for a range of prints and solids.

Indochino Hampton Tuxedo in Black

Photo: Indochino

We can't get over how stylish this women's tuxedo from Indochino is. The tailored tux is made from luxurious cashmere and silk-blend Super 140s wool. Plus, it has a satin trim that highlights the buttons, lapels and pockets. It takes about three weeks to ship, but that's because it's custom made based on your measurement profile for that perfect, high-quality fit.

Men's Formal Attire for Weddings

Formal weddings are great because the dress code is fancy (it's fun to get dressed up!) but also 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 laced 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 make sure your sleeve extends slightly past the length of your jacket so the cufflinks are visible," says Rivera.

Ted Baker London Josh Trim Fit Shawl Lapel Tuxedo in Navy

Photo: Nordstrom

This timeless navy blue tuxedo with contrast shawl lapels is a fresh take on formal wedding attire for men. Although the price tag is hefty, you can rewear this outfit to future weddings and other upscale events. Note: This tux runs small, so order one size up to achieve your best fit.

SuitSupply Relaxed Fit Roma Suit in Black

Photo: SuitSupply

Name a cooler formal wedding outfit. We'll wait. This suit features a relaxed fit and concave notch lapels for a put-together look that gives nonchalant refinement. Complete your wedding-ready outfit with a pocket square, necktie and dress shoes.

The Black Tux Suit in Light Grey

Photo: The Black Tux

Grey is another foolproof color choice for formal weddings in the summer. Crafted from 100% super-fine Italian 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.

SuitSupply Herringbone Havana Suit in Navy

Photo: SuitSupply

For men's formal wedding attire, you can't go wrong with a dark suit with a subtle pattern, like this stylish herringbone ensemble. Simply select your size, then spruce up your look with a silk pocket square, sleek necktie and loafers.

Todd Snyder Italian Peak Lapel Tuxedo in Black

Photo: Todd Snyder

You can't go wrong with a timeless black tuxedo for men's formal wedding attire. From the peak lapels to the luxurious Italian fabric, you'll be the best-dressed guest at the party. Elevate your outfit with a printed bow tie and a pair of dressy oxfords or loafers.

Indochino Highworth Suit in Burgundy

Photo: Indochino

Deep burgundy is one of our favorite alternative color options for formal attire. This dapper suit from Indochino was made for upscale occasions. The fabric contains a unique geometric diamond weave and has other high-quality components, including fully canvassed lapels, bullhorn buttons and shoulder pads.

Banana Republic Signature Italian Hopsack Suit Jacket and Pants in Black

Photo: Banana Republic

You heard it here first: Banana Republic is back, and they've brought their A-game. Available in short, regular and long lengths, this suit is crafted from a beautiful wool hopsack fabric and finished with signature pickstitch details. If that's not impressive enough, it's also wrinkle-resistant, breathable and has stretch for freedom of movement. Oh, and you can also get it in classic Navy Blue.

Bonobos Jetsetter Wool Suit in Grey

Photo: Bonobos

Made with Italian wool and a hint of stretch for comfort, this gray suit is perfect for formal weddings of any season. And with three different blazer fit options and four different pant fit options, getting that just-right fit is a breeze.

Indochino Highbridge Nailhead Suit in Navy

Photo: Indochino

This formal navy suit for wedding guests should definitely be on your radar. You can customize the suit or turn it into a tuxedo to make it even more upscale. And you can even add a vest to complete your ensemble. Simply follow the directions for your customizations, then make your picks. (Yes, it's really that easy.)

J.Crew Ludlow Slim-Fit Suit Jacket and Pants in Navy Italian Cotton Corduroy

Photo: J. Crew

Color isn't the only way you can have fun with formal attire. If you want to keep the hue classic but still play up your look, opt for a statement-making texture like corduroy. This suit from J.Crew is the perfect example, featuring a slim-fit jacket and pants in a classic deep navy shade.

Additional market work by Kate Boswell.