Decoding wedding dress codes can feel like a full-time job. As a bridal stylist, I field questions about them regularly—and of all the directives printed on wedding invitations, “casual” may be the most deceptively simple. It rarely means what it does on a Saturday spent out and about, and the line between relaxed and underdressed is thinner than many guests expect.
Casual attire usually signals a daytime or more laid-back setting, such as a backyard garden party, seaside vows, or an intimate vineyard lunch. That isn’t license to wear whatever you want, though.
Denim, shorts, athleisure, head-to-toe sequins, formal gowns, and anything that reads like beachwear are not right here. Sneakers are also generally off-limits, as are white, ivory, and anything that could be mistaken for bridal (a rule at every wedding, of course, but worth repeating).
Still, your options are far from limited. Minis are entirely appropriate, provided they’re polished; a shorter hemline done in satin, cotton, or crepe reads as celebratory, while a T-shirt dress does not.
Modern slips and colorful dresses in fluid shapes are equally strong choices, and when all else fails, a little black dress is a safe bet. On the accessories front, I recommend reaching for a low heel, simple sandal, or ballet flat to keep a dressier silhouette grounded; a small shoulder bag and pared-back jewelry can also dial the formality down a notch.
But if you’re truly feeling stuck, ask yourself: Would I wear this to an elegant dinner party? If the answer is yes, you’re on the right track.
Here, browse 24 dresses that strike the right balance, from party-ready minis to LBDs.
Mini Moments
The best mini dresses for casual weddings are elevated, but not overly fancy. Kallmeyer’s Elaiza and Staud’s Freda are more polished standouts, while Chloé’s ruffled number provides a bit of whimsy with a softer palette. Pair any of them with a kitten heel, and you’re set from the ceremony to last call.
Slinky Slips
No surprise that the versatile slip dress is an equally versatile option for casual ceremonies—have fun with the streamlined silhouette by choosing one in a punchy color. Veronica Beard’s lace-trimmed maxi and Isabel Marant’s tangerine midi are both good candidates. Just be sure to keep your styling unfussy—a minimalist heel, delicate jewelry, and a small clutch are enough.
Vivid Hues
A bold palette can make even the simplest silhouette feel special, no embellishment required. J.Crew’s Natasha short sleeve in deep ruby and Tory Burch’s flared midi in electric blue are prime examples, while COS’s drop-waist dress brings a more subdued note. Accessories-wise, indulge your inner maximalist with some color-contrasting jewelry (or go simple with sleek silver).
Classic LBDs
When the options feel overwhelming, reach for a little black dress (for what it’s worth, this is my go-to for easy wedding guest attire). Brandon Maxwell’s Sable mini is sleek enough for a late-night, intimate reception at the couple’s favorite restaurant, Khaite’s Scarla brings a little more movement to a daytime party, and Dôen’s Rivelle is a romantic pick for a garden or vineyard wedding.