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Updated Sep 03, 2025An Expert-Backed Guide to Black-Tie-Optional Wedding Attire
Don't let the "optional" part confuse you.
Photos, left to right: ELOQUII, Anthropologie, Bonobos
So there's black tie, and then there's black-tie optional. If you have a bunch of questions floating around your head, don't worry—you're not the first to try to decode this wedding dress code. So, what exactly is black-tie-optional attire? We're here to clear up the confusion with an in-depth dress code guide, complete with etiquette rules and advice from the experts. To top it off, we're also sharing some of our favorite outfit examples for both men and women, including black-tie-optional wedding guest dresses, jumpsuits, tuxedos and suits. Next time you receive an invitation to a wedding with this dress code and feel a little lost, just take a peek at this expert-backed guide for a refresher.
Black-Tie-Optional, At a Glance
- A black-tie-optional dress code means you have the option to wear black-tie attire (an evening gown or a tuxedo) but can instead wear formal attire (a suit or long dress).
- Appropriate attire options for a black-tie-optional dress code include full-length gowns, long formal dresses, dressy jumpsuits and pantsuits, tuxedos and suits.
- As with a black-tie dress code, it's generally best to avoid wearing colors that are too bright or light to a black-tie-optional wedding.
In this article: What It Means | Etiquette Rules | Dresses | Suits
What Does Black-Tie Optional Mean?
Black tie versus black-tie optional, black-tie optional versus formal—breaking down the difference between these wedding dress codes can be confusing. To help get to the bottom of it, we tapped Jason Jackson, president and CEO of Generation Tux. "The biggest difference between black-tie attire and black-tie-optional attire is simply choice," he says. "Traditional black-tie attire means dressing up is non-negotiable—tuxedo, bow tie, patent leather shoes, the works. Black-tie-optional attire opens the door to dark suits as an acceptable alternative. The key is committing to whichever level of formality you choose and executing it well."
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Generally, a black-tie-optional dress code means that the couple and their wedding party will be dressed in black tie. It's therefore courteous for guests to reflect this level of formality in their own attire. You can either go full-on glam in black-tie-worthy attire or opt for a slightly more relaxed but still formal black-tie-optional ensemble via a dark suit or dressy cocktail dress.
Keep in mind: A black-tie-optional dress code can be written a few different ways. Some couples write "black-tie preferred," "black-tie invited" or "black-tie encouraged." Typically, these three terms mean that the to-be-weds likely want their guests to wear a tux or full-length gown but will also accept formal suits and dresses. A daytime reception allows for a little more flexibility with colors and prints, but an evening black-tie-optional wedding definitely calls for the dress code's most formal attire.
Learn more:
The Etiquette Rules of Black-Tie-Optional Attire
Still have some questions about how to dress for a black-tie-optional wedding dress code? Here are a few pointers that might help.
Dress Length and Style
The biggest difference between black-tie attire and black-tie-optional attire is that full-length evening gowns are preferred but not a must. A midi-length dress is also acceptable—just avoid anything above the knee, as it will be too casual.
Wedding guest jumpsuits are another gray area for guests. Ultimately, whether or not a jumpsuit is acceptable depends on the style. Avoid anything that feels a little too laid-back (for example, bold patterned fabric) and instead opt for something tailored and elevated. There are a couple of stylish options below to help inspire you.
Black-Tie-Optional Men's Attire:
Black-tie-optional men's and gender-neutral attire can be just as confusing as women's attire. For example, what type of jacket should you wear? Well, classic black-tie attire means that tuxedos are mandatory, while black-tie optional means that the tuxedos are, well, optional. It's totally acceptable to swap out the tuxedo jacket for a structured suit jacket and wear an understated tie.
Learn more: Tuxedo vs. Suit: What's the Difference?
Colors to Wear and Avoid:
For a black-tie-optional dress code, lean into darker colors like black, navy and charcoal and deeper jewel tones like emerald and burgundy. Avoid anything too light, bright or busy and follow our advice about the best colors to wear to a wedding as a guest.
Black-Tie-Optional Dresses for Wedding Guests
Whether you're ready to start shopping or just want to see pictures for inspo, we've got you covered. Keep reading to see some of our favorite black-tie dresses and jumpsuits for any and all upcoming weddings.
1. Lulus Heavenly Hues Black Maxi Dress
Photo: Lulus
Found: your next summer wedding guest dress. This airy pick from Lulus is giving "it" girl energy and features classic details all around. From the black hue to the plunging neckline, it's a foolproof pick for your next luxe occasion. Use code THEKNOT20 for 20% off your first purchase.
2. BHLDN Leila Deep-V Flutter-Sleeve Satin A-Line Gown
Photo: Anthropologie
Anthropologie is one of our go-to spots for both black-tie-optional and black-tie wedding guest dresses. The site offers beautiful styles from a variety of well-known designers in inclusive sizes. The best part? This floral wedding guest dress by BHDLN is suitable for celebrations all year round thanks to the richly colored botanical print.
3. Amanda Uprichard Cherri Gown
Photo: REVOLVE
Still not sure what to wear to a black-tie-optional wedding? Darker, traditional hues can instantly make an outfit feel more formal. Exhibit A: this black strapless dress by Amanda Uprichard. The sweetheart neckline, boned bodice and side slit give it a sleek, stylish edge.
4. Adrianna Papell High Low Mikado Gown With Asymmetrical Detail In Midnight
Photo: Adrianna Papell
This high-low gown from Adrianna Papell is absolutely showstopping. The rich midnight blue shade is perfect for fall and winter black-tie-optional weddings. The thick fabric makes this gown look absolutely luxurious. Use code THEKNOT25 for $25 off any purchase of $100.
5. Amsale Satin One-Shoulder Gown
Photo: Saks Fifth Avenue
It's not every day you get to dress up in fancy evening wear. Take this opportunity to wear something truly fit for the occasion, like this silky floor-length gown. The asymmetrical off-the-shoulder neckline adds character to the column silhouette. Best of all, it comes in multiple sultry colorways, making it one of our favorite black-tie-optional dresses for ladies.
6. Sachin & Babi Jenny Gown
Photo: Sachin & Babi
If you're leaning more toward "black tie" than "optional," this stunning gown is a great choice. The pretty floral print is eye-catching, while the puffed crescent sleeves exude elegance. The empire waist, A-line skirt and side slit complete this breathtaking black-tie-optional ensemble.
7. Abercrombie & Fitch The A&F Giselle Drop-Waist Mesh Maxi Dress
Photo: Abercrombie & Fitch
Looking for something that's just as comfortable as it is chic? Abercrombie & Fitch has a range of stunning black-tie-optional dresses for women, and this pick is a no-brainer. With an elegant trapeze silhouette, halter neckline and eye-catching pleats, you'll be reaching for this effortless maxi for many occasions to come. Better yet, it comes in petite and tall lengths.
8. Reformation Jeany Silk Dress
Photo: Reformation
This sweeping gown is available in six different colorways, but we're particularly keen on the classic navy shade. Feel free to choose whichever design best suits your style and the season, but keep in mind that lighter shades such as champagne should be avoided in case they photograph white. Dress up your outfit with silver jewelry and heeled sandals.
9. ELOQUII One Shoulder Bow Column Dress
Photo: ELOQUII
As we already mentioned, shorter dresses aren't off limits for a black-tie-optional dress code—so long as you don't go too short. This midi-length dress from ELOQUII looks formal and contemporary at the same time. The column silhouette and asymmetrical neckline are ultra-flattering while the oversized bow adds a memorable touch.
10. Lulus Kiska Navy Blue Lace Wide-Leg Jumpsuit
Photo: Lulus
If you're a minimalist, this effortlessly elegant black-tie-optional jumpsuit was made just for you. With a chic V-neck, classic navy hue and functional side pockets, this sleek and rewearable jumpsuit easily fits a formal dress code. Plus, you'll have a blast busting moves in the voluminous wide-leg pants. Use code THEKNOT20 for 20% off your first purchase.
11. Solace London Pleated Lila Dress
Photo: Rent the Runway
If your style is bold and the wedding time or venue leans more relaxed, consider this sophisticated midi dress in a sunny shade of yellow. The asymmetrical cape sleeve makes a statement while exuding sophistication. Keep your accessories classic and minimal to maintain a black-tie-friendly look.
12. ML Monique Lhuillier Sequin Wide-Leg Jumpsuit
Photo: Rent the Runway
What's a black-tie-optional wedding without a bit of sparkle? This glittery jumpsuit comes in a stylish multicolored hue that exemplifies fall wedding attire. The wide-cut leg is right on trend and will look excellent paired with a strappy stiletto or heeled sandal.
13. Bec + Bridge Moondance Strapless Dress
Photo: REVOLVE
This sultry slip dress comes in a shade for every season. The "blush" will look amazing for daytime spring and summer weddings, while the "chocolate" is perfect for fall and winter events. An unfussy silhouette means that every detail of this dress gets to stand out, from the strapless neckline to the draped back.
14. Adrianna Papell Asymmetrical 3D Floral Jumpsuit In Hot Pepper
Photo: Adrianna Papell
If you're looking for black-tie-optional attire that's stylish and practical, you've come to the right place. This jumpsuit has a fashionable asymmetrical bodice in a chic crepe fabric. Combined with the minimal silhouette, the bright red color is perfect for celebrations of any season. Use code THEKNOT25 for $25 off any purchase of $100.
15. Lulus Molinetto Navy Blue Lace Ruffled Tiered Sleeveless Maxi Dress
Photo: Lulus
We've got plenty more black-tie-optional dress picks to come. Check out this formal pick from Lulus in the prettiest navy shade. A floral lace overlay and whimsical tiers create a light and airy look that still feels so elegant. And with a V-neckline, defined waist and ankle length, it's a suitable dress for both daytime and evening soirees. Use code THEKNOT20 for 20% off your first purchase.
16. Needle & Thread Nova Draped One-Shoulder Ankle Gown
Photo: Needle & Thread
Needle & Thread's ethereal evening gowns are so gorgeous. Not only will you immediately fall in love with the dress's sage green shade, but the tonal sequins are a work of art in themselves and create a glistening effect with every movement.
17. City Chic Attract Jumpsuit
Photo: City Chic
Looking for a black-tie-optional jumpsuit that you can pull out for future special occasions? We've found it. Featuring a sleek strapless neckline, comfy elastic waist and wide leg, it can easily be dressed up for a black-tie-optional wedding. All you need is a stylish pair of stilettos and some jewelry.
18. Show Me Your Mumu Clarissa Corset Dress
Photo: Show Me Your Mumu
Show Me Your Mumu has a range of black-tie-optional female attire for every personal style. This chic square-neck wedding guest dress is designed to turn heads and features a showstopping slit and tiered hem. Wondering what to wear to a spring wedding? The Slate shade will look whimsical against a blue sky and blooming florals.
19. Kay Unger Delfina Gown
Photo: Rent the Runway
Gold florals and puff sleeves add an ethereal element to this otherwise simple black gown by Kay Unger. The modest high neckline and long skirt make it a great pick for anyone who prefers more coverage. You can rent this glamorous gown starting at $60 for a four-day rental, or you can purchase it at a discounted rate.
20. ELOQUII Satin Puff Sleeve Pleated Dress
Photo: ELOQUII
We can just picture this bold blue wrap dress at an upscale ballroom wedding. The black-tie-optional pick features a flattering wrap front and pleated draped detail, while satin fabric and deep hue keep it elevated. It's a comfortable and fashionable pick for any venue or wedding vibe.
Black-Tie-Optional Tuxedos and Suits
On the hunt for black-tie-optional menswear? Look no further. "Unlike other dress codes, black-tie-optional attire allows guests to go all out with a black-tie look or opt for a more casual suit," says Jackson. "It means you can wear a tuxedo if you want to go all out, but a well-tailored dark suit with a dress shirt and tie is equally appropriate." Check out our favorite suave styles for both men and women, below.
1. The Black Tux Ocean Velvet Tuxedo
Photo: The Black Tux
If you're attending a black-tie-optional wedding in the fall or winter, consider rocking a velvet tuxedo? The soft velvet will add a luxurious element to your overall look. Plus, opting for a tuxedo rental is a budget-concious way to lean into the latest trends.
2. SuitShop Men's Charcoal Gray Suit
Photo: SuitShop
Remember: Tuxedos are optional for a black-tie-optional wedding. That said, a dark gray suit will never steer you wrong. It makes for a formal and put-together look, but it still feels a little more laid-back than a classic black tuxedo you'd wear to a black-tie wedding.
3. BLACK By Vera Wang Slim Fit Tuxedo Jacket
Photo: Men's Wearhouse
Men's Wearhouse is one of our go-to destinations for black-tie-optional tuxedos and suits. If you're leaning toward timeless luxury, this slim-fit tuxedo by Vera Wang is a worthwhile pick. The set comes with a black tuxedo jacket accented with a grosgrain-faced lapel and matching flat-front trousers. Accessorize with a black bow tie and dress shoes to complete the look.
4. Indochino Hampton Midnight Blue Dinner Jacket
Photo: Indochino
A black-tie-encouraged wedding is your chance to don a seriously dapper dinner jacket, like this one from Indochino. The website is full of stylish men's attire for formal events, including dress pants and tuxedo shirts to complement the jacket. The deep navy blue suit color adds a unique edge while still looking appropriate for black-tie-optional attire.
5. Hawes & Curtis Navy Birdseye 3 Piece Tailored Italian Suit
Photo: Hawes & Curtis
Of course, it's black-tie optional, not black-tie period. Feel free to swap out the tux for a structured suit instead. Three-piece suits are an excellent option because the addition of a vest takes the formality up a notch. Remember to stick with a dark suit, particularly for evening events. Once you've got that figured out, a nice pair of dress shoes will complete the look.
6. Suitsupply Dark Green Perennial Tailored Fit Havana Suit
Photo: Suitsupply
Suitsupply is a one-stop shop for contemporary men's formalwear perfect for those in need of a suit for a wedding. This modern option has a subtle pattern for an elevated touch. Simply add a white dress shirt, then you can officially move onto accessories. A white pocket square and black tie are foolproof options.
7. SuitShop Women's Burgundy Suit
Photo: SuitShop
Suits are also a great option for women attending black-tie-optional weddings, and we love this stunning burgundy pantsuit from SuitShop. It's crafted from stretch-fit fabric for extra comfort, while the dark burgundy shade is suitable for dressy events. Style your outfit with a chic pair of heels or bedazzled loafers.
8. The Black Tux Black & Tartan Tuxedo
Photo: The Black Tux
Depending on the wedding style and season, you could also play around with different patterns and textures. This slim-fit jacket is covered in a tartan pattern that looks both fashion-forward and dressy enough for black-tie-optional weddings. Wear it with a black bow tie, white tuxedo shirt and slim-fit tuxedo slacks.
9. Michael Kors Windowpane Suit Jacket
Photo: DXL
This black-tie-optional suit jacket is ideal for your forthcoming outdoor affair. The blue hue and windowpane print make it a great option for daytime events, such as at the beach or garden. Another plus is that it's made with comfortable mid-weight material, making it a great pick for any kind of weather. Style your outfit with the matching pants, a white dress shirt and a simple necktie.
10. Bonobos Empire Stretch Italian Wool Tuxedo
Photo: Bonobos
Looking for an alternative to your typical black tux? We love this navy option from Bonobos, which features a single-button front and contrasting satin shawl collar. Made with luxurious Italian wool with a hint of stretch, it's an ideal option for fall and winter weddings where you may want a bit of extra warmth.
Additional reporting by Naoimh O'Hare.
