15 Eco-Friendly Sustainable Summer Dresses to Wear All Season Long

KNOWN SUPPLY prioritizes quality, celebrating their makers, and sharing their mission with individuals and brands alike. Each of their products features the signature of the person who made it, demonstrating the transparency of their production process.

Their Aja Dress is soft, stretchy, and form fitting, featuring buttons that run all the way down the front.

Pact partners with Fair Trade USA, Global Organic Textile Standard, and SimpliZero to make products with people and the planet in mind. They measure the impact of each of their products, then offset them through reforestation, renewable energy, and community projects.

Their Fit & Flare Midi Dress is a timeless choice, and it’s easy to throw on and go.

Toad&Co is committed to supporting their local communities and partnering with local non-profits to give back in any way possible.

Coming in classic black as well as a variety of fun patterns, their wrap dress flatters all body types and is the perfect summer dress for any gathering. It’s sustainably made from a blend of organic cotton and TENCEL Lyocell.

With a commitment to protecting the environment and supporting fair labor, Outerknown gives back to non-profits, keeps a close eye on their supply chain, and uses materials vital to responsible products.

The loose fit and side slits of their Hermosa Tank Dress make it comfortable and easy to move in, creating a look you can dress up or down with ease. It’s made from 100% regenerative organic cotton.

prAna creates activewear and everyday clothing with a focus on sustainable materials and ethical production.

This Hideaways Dress, made from 100% organic cotton and Fair Trade Certified™, is as versatile as it is comfortable—perfect for throwing over a swimsuit at the beach or dressing up for dinner on a summer evening.

Tentree plants ten trees for every item purchased, with over 75 million trees planted and communities helped to date, and they only use organic and recycled materials to cut back on waste water and emissions.

Their Denim Tern Dress is made from organic cotton, making it a great natural breathable choice for summer.

Patagonia brings their signature commitment to people and planet to this effortlessly wearable summer dress. The Amber Dawn Jersey Dress is crafted from a soft, stretchy 96% organic cotton slub-knit jersey — breathable, easy to move in, and machine washable for real-life wear. A strappy, wrap-inspired empire bodice and knee-length A-line silhouette make it as flattering as it is versatile.

Made in a Fair Trade Certified™ factory in Sri Lanka, this dress puts your money directly back into the hands of the people who made it — every Fair Trade purchase earns workers a financial premium for their labor. At $69 and rated 4.4 out of 5 from over 130 real customers, it’s the kind of dress you reach for all summer long.

Style it with sandals for a beach-to-brunch look, or dress it up with a linen blazer for something more considered.

A cheerful riot of color for the conscious summer wardrobe. Happy Earth’s Lily Dress is crafted from silky smooth 100% organic cotton — grown without pesticides, dyed with certified non-toxic dyes, and sewn in a Fair Trade certified solar-powered factory in India. A dress with a full story behind every stitch.

The Lily’s fit-and-flare silhouette flatters effortlessly — a square neckline, wide straps, extra-stretchy smocked back, and a flowy midi skirt that drapes beautifully whether you’re at a morning coffee date or drinks on the town. Oh, and the pockets are real. With every purchase, you choose your impact: plant trees, clean up plastic, or fight climate change.

Style it with your favorite sandals for an easy, elevated summer look — and feel genuinely good about every part of how it was made.

Designed in Finland, Marimekko offers bold colors and prints like this dress! The brand uses more sustainable materials, like organic cotton in this case.

If bold colors and prints are your style, check out their other dresses too.

Boden, a British heritage brand beloved for its joyful prints and impeccable craftsmanship, brings effortless summer style to the sustainable fashion space. Their summer dresses are crafted from responsibly sourced natural materials — including this standout piece in 100% linen with 20% recycled content — perfect for staying cool, comfortable, and beautifully dressed all season long.

The Pia Linen Yoke Tassel Dress is the kind of throw-on piece that earns compliments on the beach and at the dinner table in equal measure. With a relaxed fit, above-the-knee length, and playful tassel detail, it pairs effortlessly with sandals and a tote bag for an easy summer look. Available in Petite, Regular, and Long fits — one of the few sustainable brands that genuinely caters to all heights without compromise.

ARTKNIT STUDIOS crafts garments that honor the planet through the quiet power of natural materials and Italian craftsmanship. Their Linen Twill Special Back Dress is summer dressing distilled to its purest form — a fitted bodice that falls into a flared skirt, a halter neckline with criss-cross open back straps, and 100% Masters of Linen certified twill that’s breathable, structured, and gets more beautiful with every wear.

This is the dress for a dinner by the sea, a long afternoon in the sun, or any moment that deserves to be dressed with intention. B Corp certified, with a Digital Product Passport that lets you trace exactly who made your piece and where the linen came from. Because when you know the full story, getting dressed means something more.

Committed to sustainable practice, Whimsy + Row’s mission is to provide ease and elegance for the modern woman. They use locally-sourced, upcycled, and low-impact materials for all of their clothing.

Their Sophie Dress is maxi-length and made from breathable linen, making it easy to convert from afternoon to evening.

Ninety Percent was founded on the rare principle to share 90% of their profits with their people and causes they believe in.

Their Priam Draped Dress is created with sustainable viscose. You can learn more about where it’s made (ethically) right on the product page. It’s a fluid maxi dress perfect for any special occasion.

This Adjustable Sleeve Mini Dress by LIILA blends breathable comfort with ethical craftsmanship. Made from cruelty-free peace silk in a bold hot pink, it’s lightweight, breezy, and ideal for warm weather.

Why we love it: adjustable sleeves for a custom fit, handmade detailing, and vibrant summer-ready color. Ethically produced in small batches by women artisans in India, this dress supports living wages and zero-waste practices using eco-conscious materials.

KINdom aims to build an environment where we take care of nature, living things, and each other. All of their branding is compostable, from their labels to their hang tags.

Reclaimed 100% rayon was used to create their Merlyn Yoke Tunic Dress, which has a front tie and a feminine pattern.