21 Best Casual Bridesmaid Dresses for Outdoor Weddings & More

They’re easy to wear, versatile and fun—what’s not to love?
Three casual bridesmaid dresses
Photos, left to right: Anthropologie, Azazie, Reformation
jessica booth headshot
by
Jessica Booth
jessica booth headshot
Jessica Booth
The Knot Fashion Contributor
  • Jessica is a freelance writer who covers topics such as weddings, parenting, wellness, commerce, health and food.
  • Jessica has written for sites including Cosmopolitan, Delish, Bustle, Romper, Refinery 29, Reviewed, Parents, Brides, People, Forbes, The Daily Beast and many more.
  • Jessica has a degree in journalism and lives on Long Island in New York.
Updated Jul 01, 2024
We have included third party products to help you navigate and enjoy life’s biggest moments. Purchases made through links on this page may earn us a commission.

Opting for a more casual dress code at a wedding typically means aiming for a vibe that is more low-key and relaxed, even when it comes to the wedding party. A casual bridesmaid dress doesn't have to be quite as formal as traditional options, but it should feel extra special – the wedding party is still on display all night. Appropriate casual bridesmaid dresses can range from something akin to cocktail attire or even more informal, depending on the location, time of year, and what the bride is wearing. Full-length gowns aren't necessary: midi, knee-length or more easygoing maxi dresses work well. Casual means you can probably have fun with color and prints, opting for something more bold or expressive, like bright shades or floral patterns. This is also a great time to try the mismatched bridesmaid dress trend, which can feature different style dresses in the same color family, and tends to feel a bit more relaxed.

21 Best Casual Bridesmaid Dresses in Every Color

The nice thing about looking for casual bridesmaid dresses is that there's a lot of flexibility. Look for dresses that leave bridesmaids feeling dressed to impress but be sure not to go too formal: It would look off if the wedding party was a lot more dressed up than guests. Casual bridesmaid dresses for outdoor weddings (which is popular for this dress code) should work with the venue, like choosing something flowy and boho for a beach ceremony. Casual floral bridesmaid dresses are also a fun option and can be great to throw into the mismatched look. And if you're wondering where to buy casual bridesmaid dresses, that's easy—most stores that sell dresses will have something that fits this easy-going dress code.

1. Pleated Maxi Casual Bridesmaid Dress

Lulus pleated blue maxi casual bridesmaid dress
Photo: Lulus

This pleated maxi dress is a great dressy casual option: the longer length makes it feel special, but it's simple enough to dress down as well. It has a loose flowing skirt and you can tie a bow in the back for a cute detail. This light blue shade is beautiful for summer or spring weddings.

Size Range: XS-XL

2. Midi Length Casual Bridesmaid Dress

Petal & Pup red casual midi bridesmaid dress
Photo: Petal & Pup

This midi dress definitely has a bit of a business-casual feel to it, but the bright red and front slit make it stand out as appropriate for a special event. The square neckline and thicker straps also make it feel more supportive. Two other great things about this dress? It's very affordable and super versatile and can definitely be worn again.

Size Range: 0-12

3. Floral Wrap Style Maxi Casual Bridesmaid Dress

Reformation floral casual bridesmaid dress
Photo: Reformation

The floral print of this maxi dress is what makes it feel more casual. It also has a relaxed and flowy feel thanks to the airy skirt, high slit and wrap-style tie at the waist. Plenty of bridesmaids will love that it has loose sleeves and the deep v-neck balances out the rest of the fit.

Size Range: XS-XL

4. Smocked Waist Midi Casual Bridesmaid Dress

A.L.C. midi casual bridesmaid dress
Photo: Revolve

This midi dress features beautiful pleating and overall chic vibe that doesn't seem too fancy. A smocked waist is a bit more comfortable, and the back features a cute key-hole cutout. This is a really versatile dress because, between the color and style, it would work for any season and can easily be worn at another occasion.

Size Range: 0-14

5. Chiffon Maxi Casual Bridesmaid Dress

Show Me Your Mumu blue chiffon casual bridesmaid dress
Photo: Show Me Your Mumu

Available in a wide range of neutrals and pale pastels, this maxi is perfect for a spring or summer casual bridesmaid dress. The flutter sleeves, sweetheart neckline and tiered skirt give it a pretty, feminine look, and the smocked back makes it feel a lot more comfortable rather than restrictive.

Size Range: XXS-3X

6. Puff Sleeve Pleated Casual Bridesmaid Dress

Eloquii blue satin casual bridesmaid dress
Photo: Eloquii

The statement sleeves and darker color of this dress make it ideal for fall and winter weddings. It features a comfortable elastic waist in the back and a cute v-neck, with some pleating in the front that makes it more unique. Even with the longer length, this is nice for a casual wedding.

Size Range: 14-32

7. Orange Ruffled Slip Casual Bridesmaid Dress

Doen orange ruffled casual bridesmaid dress
Photo: Doen

With a fitted bodice and swingy skirt, this longer slip dress is a nice mix of laid-back and elegant. The bright orange color makes this feel more casual than formal and it's also available in a pretty floral pattern. It has a plunging back and ruffles along the neckline and hem, and it would fit right in with a summer ceremony.

Size Range: XXS-XXL

8. Strapless High Low Casual Bridesmaid Dress

Susana Monaco red strapless casual bridesmaid dress
Photo: Revolve

The high-low hem of this dress is what makes it feel a bit more relaxed rather than overly formal. It also keeps it a little more interesting, as the dress is otherwise quite simple. Available in a bold red or other bright shades like pink and neon green, this is fun for warmer weather or tropical locales.

Size Range: XS-XL

9. Floral Off-The-Shoulder Casual Bridesmaid Dress

Lulus floral off-shoulder casual bridesmaid dress
Photo: Lulus

Floral patterns in general are a good fit for a more casual look, especially this one in soft shades of peach. The off-the-shoulder straps and soft, flowing skirt give this a little bit of a boho feel as well, while details like a sweetheart neckline and a front slit make it more grown-up.

Size Range: XS-L

10. Pink Silk Cowl Neck Casual Bridesmaid Dress

Grace Loves Lace pink silk casual bridesmaid dress
Photo: Grace Loves Lace

If you're looking for something on the shorter side that is also chic and sophisticated, this silk dress is a perfect fit. Made of slinky, soft satin, this dress flows really nicely. It features a low back and a tie at the waist with pretty, thin straps. The cowl neck is a nice detail and the soft pink color feels romantic.

Size Range: XS-XXXL

11. Ruffle Midi Casual Bridesmaid Dress

Show Me Your Mumu champagne ruffle casual bridesmaid dress
Photo: Show Me Your Mumu

Between the shorter length and abundance of ruffles, this dress would fit right in for a more relaxed dress code. It's available in a wide range of colors, including pretty patterns, and also a wide range of sizes. The flutter sleeves and smocked back are comfortable, and boning at the neckline offers just a bit of structure.

Size Range: XXS-XXXL

12. Ruffled Off-The-Shoulder Casual Bridesmaid Dress

Eloquii black ruffle casual bridesmaid dress
Photo: Eloquii

Tiered ruffles make this maxi dress feel more interesting and just formal enough for a bridesmaid dress. It's made of comfortable stretch chiffon, with off-the-shoulder straps. The colorful print is great for warm weather and destination weddings, while the darker solid color makes it a bit more versatile.

Size Range: 14-32

13. Short Bow Casual Bridesmaid Dress

Free People bow mini casual bridesmaid dress
Photo: Free People

This dress is equal parts whimsical and stylish, thanks to the large bow along the neckline and shoulder. The short length and cotton poplin fabric definitely classify it as more casual, but it still works for a bridesmaid, especially for an outdoor daytime wedding. And it's versatile enough to be worn again and again.

Size Range: XS-XL

14. Flutter Sleeve Midi Casual Bridesmaid Dress

Petal & Pup flutter sleeve midi casual bridesmaid dress
Photo: Petal & Pup

The midi length and drop pleat skirt on this dress give it a little bit of a vintage feel. It also has pretty flutter sleeves and a v-neckline and the dusty rose color is sweet and romantic (although it's also available in navy blue). This is a versatile pick that can really work for any season.

Size Range: XS-XL

15. Floral Maxi Casual Bridesmaid Dress

ASTR The Label floral casual maxi bridesmaid dress
Photo: Anthropologie

Flowery, flowy and made of lightweight chiffon, this dress is an airy dream. This is great as an accent dress for a mismatched bridesmaid dress look featuring lilac or purple colors. The long sleeves also make it ideal for a spring wedding when the weather is still a little chilly.

Size Range: XS-XL

16. Halter Maxi Casual Bridesmaid Dress

Reformation yellow halter maxi casual bridesmaid dress
Photo: Reformation

In this sunshiney yellow color, this halter dress is the perfect pick for a summer wedding, especially one that takes place outside. It's backless with a high front slit, and has a tie at the back of the neck. For a very trendy and more casual look, opt for the leopard print. This is also a great option for petite sizes.

Size Range: 0-12 Petites

17. Chiffon Column Casual Bridesmaid Dress

Azazie blue casual bridesmaid dress
Photo: Azazie

Inclusive sizing, a wide range of colors available, an affordable price point and a versatile style—what more could you ask for? Part of the Azazie x Barbie collaboration, this dress features feminine details, like a sweetheart neckline, corset top and lace trim. The lace-up back is racy and fun.

Size Range: A0-A30

18. Fitted Midi Casual Bridesmaid Dress

Show Me Your Mumu black fitted casual bridesmaid dress
Photo: Show Me Your Mumu

Simple yet chic, this midi dress is a versatile pick. Black is a classic option (with the bonus of becoming a wardrobe staple you'll wear again and again), but it's also available in neutral hues and bright colors like pink and turquoise. It has a stretchy fit and wide straps for added comfort, and the price is also pretty reasonable.

Size Range: XS-3XL

19. Maxi Casual Bridesmaid Dress

Ivy City Co. sage casual maxi bridesmaid dress
Photo: Ivy City Co.

This is another option that is very minimalist, which makes it super versatile: you can easily dress it up or down with accessories and it has wear-again potential. The sage green is pretty for any time of year, and this definitely feels like a more modest option, with a higher neckline, long skirt and flutter sleeves.

Size Range: 00-34

20. Satin Stretch Midi Dress

Anthropologie satin stretch casual bridesmaid dress
Photo: Anthropologie

While this dress features a simple style that can easily be dressed down, the stretch satin fabric makes it feel instantly more elegant and sophisticated. The ruching on the side makes this feel a bit more comfortable and flexible, and it has a back slit.

Size Range: XS-XXL

21. Twisted Neck Casual Bridesmaid Dress

Eloquii yellow casual satin bridesmaid dress
Photo: Eloquii

The twisted keyhole neckline of this dress, which mimics a halter, is what makes it more unique. It has a satin feel with an asymmetrical skirt and flouncy hem, all of which make this dress fun and flirty. In bright yellow, it's great for summer; in the abstract pattern, it's a bit more versatile and a little more casual too.

Size Range: 14-32

Up Next
  • Collage of three backyard wedding attire outfits
    What to Wear to a Backyard Wedding.