The 17 Best Semi-Formal Wedding Guest Dresses of 2024

Perhaps one of the most popular wedding dress codes is “semi-formal” attire, but searching for a dress that fits this ambiguous label can be hard to pin down. Is a sundress too casual? Is a satin midi too dressy? What hemline is appropriate? The good news is while there are many interpretations of this dress code, popular online retailers have pages upon pages of semi-formal dresses to peruse.

Keep the season and venue in mind when shopping for a semi-formal wedding guest dress. For winter or fall nuptials, break out the jewel-toned dresses in lush fabrics like velvet. While a spring or summer wedding is a great opportunity to play with brighter colors, lightweight fabrics, and fun patterns. Dressing for a semi-formal wedding also allows for diverse dress lengths, as mini, knee-length, midi, and floor-length frocks are all acceptable, depending on the design. To help narrow down your search, we selected the best options available for every style and season.

Our Top Picks

Shopping for multiple dresses to wear to different weddings can get expensive, but luckily there are tons of affordable options out there. Consider this stylish and under-$100 tiered midi dress from Lulus, available in six gorgeous colors. We especially love this sweet lavender option for spring.

Size: XXS-XL | Materials: Polyester | Length: Midi

A simple, sweeping tube-style gown is made fancier with gathered detailing that contrasts with the horizontal pleats on the top. The boned sides add structure and the cool satin fabric is ideal for winter or fall nuptials as this style can easily transition from day to night.

Size: 0-10 | Materials: Polyester | Length: Maxi 

A classic wrap dress is always a go-to for semi-formal occasions, and we love this pink blush option from Zimmermann—though it’s also available in other colors. Style this feminine frock with gold jewelry and a pair of nude pumps.

Size: XS-L | Materials: Silk charmeuse | Length: Mini 

Heading to a semi-formal wedding with a spring floral vibe? You won’t want to miss this stylish pleated midi from Lulus. These pretty pink florals would look gorgeous for a garden ceremony, but the dress is also available in a variety of other colors and prints that work well for the season.

Size: XS-XL | Materials: Polyester | Length: Midi

Add some subtle razzle-dazzle to your look with this chic one-shoulder option. With a tie waist, draping throughout, and a hem that hits mid-calf, you’ll look sophisticated and ready to party. The side slit shows a pop of leg, giving the look a bit of dramatic flair that’ll really stand out at an autumn wedding.

Size: XS-XL | Materials: Polyester | Length: Midi 

Reformation is known for its semi-formal dresses, so it’s hard to pick a favorite. However, this pastel purple floral print number is definitely a winner. It also comes in several other beautiful colors and prints worth considering depending on the season and venue.

Size: 0-12 | Materials: Viscose | Length: Midi

This midi dress comes in a striking deep purple color that is undeniably stunning. The eye-catching tiered detailing on the puff sleeves, the deep V-neckline, and the flattering tie waistband make it worth the splurge. We also love the tuberose option for a daytime summer wedding guest dress. 

Size: 00-16 | Materials: Polyester | Length: Midi

This floral-printed mini is a sweet and romantic option for daytime wedding festivities. The puff sleeves add a bit of drama to the look, while the high neckline and tiered skirt add a flattering and unique touch.

Size: XXS-XL | Materials: Viscose | Length: Mini

This classic blue mini dress is elegant enough to wear to a semi-formal wedding while still having a bit of an edge. We love the delicate sweetheart neckline and the subtle side slit for a sexy flair.

Size: XS-L | Materials: Satin | Length: Mini

For a playful, summer semi-formal wedding ensemble, don’t miss this ruffled, strapless dress. The blush pink adds a romantic element to this already sweet silhouette. Pair it with neutral accessories for a simple yet pretty look.

Size: XXS-XXL | Materials: Polyester | Length: Midi

While cutouts may be a daring choice for a wedding, we love the simplicity of this dress. The butter yellow color and bare shoulders make this sweet for summer.

Size: 2-12 | Materials: Viscose rayon | Length: Midi

When in doubt, a slip dress is always a safe bet for a semi-formal affair. This midi comes in eight different colors, so there is an option for any and every style. No matter the season, this is a look you can wear again and again.

Size: 0-22W | Materials: Satin charmeuse | Length: Midi

When the occasion is semi-formal, this one-shoulder figure-flattering dress is a stylish option. The sleeveless midi from Dress the Population has two panels that flow from the single-tie shoulder. Available in 13 colors, including burgundy, blue, orange, pink, and black, this classic midi dress is an elegant choice.

Size: XXS-XXL | Materials: Polyester, spandex | Length: Midi 

This elegant floor-length dress from Azazie can effortlessly take you from semi-formal to formal events. Made of chiffon, the dress has a fitted sleeveless bodice and a flowy pleated skirt with pockets on both sides. It has an A-line silhouette, a scoop neckline, and a slit that starts just above the left knee. The dress is available in an extended size range and can also be custom-made to order. There are over 60 colors available, from classic black to fuchsia, lavender, and jade, so you’re sure to find one to suit your taste and event.

Size: 0-30 | Materials: Chiffon | Length: Floor 

Prepare to make a sweeping entrance in this classic yet on-trend black gown that features a cutout bow embellishment. The bottom half of the dress is slinky and form-fitting, while the low back and slits make it even sexier.

Size: 00-12 | Materials: Polyester | Length: Floor 

With its asymmetric hem, sheer bodice, and ruffle detailing, this isn’t your average floral midi. The georgette silk is stunning. It’s a romantic option with the perfect color palette for a fall wedding and would pair perfectly with an outerwear piece like a leather jacket and of-the-moment ballet flats.

Size: XXS-XL | Materials: Silk | Length: Midi 

We love this sassy style for a spring, summer, or destination wedding guest look. The clingy, ruched style creates a sleek silhouette with a mock neck. The pull-on style, in mesh, keeps things light and breathable.

Size: XXS-XXL | Materials: Polyester, spandex | Length: Ankle 

Create a fanciful silhouette with this frock that features dramatic ruffle sleeves that add volume. The bateau neck and scuba style keep the rest of the dress form-fitting and simple, so you can have some fun playing with a dramatic makeup look or unique jewelry.

Size: 0-18 | Materials: Polyester, spandex | Length: Midi 

What to Look for in Semi-Formal Guest Attire

• Time and Setting: When it comes to semi-formal affairs, it’s important to consider the setting and time of day. This dress code can have many different interpretations, so these details can help you determine which semi-formal dress is appropriate. Opt for brighter colors, shorter hemlines, and fun patterns during the day. For evening nuptials, cocktail dresses, floor-length dresses, and polished jumpsuits are all appropriate options. Essentially, you want to look elevated yet understated—which is why little black dresses are a classic choice.
• Season: If you’re invited to a wedding in fall or winter, look for semi-formal dresses with three-quarter or longer sleeves and heavier fabrics. You might want to consider a longer hemline and darker fabrics for fall and winter as well. If the semi-formal wedding is planned for spring or summer, you can choose shorter hemlines, lighter fabrics, and florals and pastel colors if you wish. 
• Material: Satin fabrics, lightweight chiffon, or viscose are good choices for semi-formal attire. Cottony materials may be too casual for the occasion, while overly embellished fabrics will likely be too dressy. It’s all about finding a balance.

Why Trust Brides

Contributing writer Melony Forcier is a recent graduate starting her career path in beauty and fashion journalism. Before graduating, she interned with both Boston Magazine and Foundation PR. Additionally, she served as a fashion editor for Boston University’s lifestyle magazine, The Buzz.