21 Ethical and Sustainable Dresses for S/S 23

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If you’re looking for a gorgeous sustainable summer dress or ethical formal dress, you’re in the right place.

We’ve selected the best brands creating beautiful ethical and sustainable dresses which are guaranteed to look good all year round.

Let’s jump in.

The Best Sustainable Summer Dresses


Sustainability: Ethically made dresses created using sustainably up-cycled materials and fabrics, including organic cotton and regeneratively grown cotton.

Styles: Flowing maxi dresses, mini dress styles, midi dresses, maternity friendly dresses

Sizes: Petite XS-XL, XS-XL, Extended 1X-3X

Ships to: U.S. & International

creates handmade timeless, versatile dresses designed to be cherished for years to come.

Dresses are created from organic cotton, or regeneratively grown cotton, without harmful chemicals or pesticides, making their fabric luxuriously soft and perfect for sensitive skin. In addition, their gorgeous prints and beautiful colors are responsibly created using organically certified dyes.

Christy Dawn is transparent about the dressmakers behind your clothes and has full price transparency for each dress.

Christy Dawn organic dresses

2. Reformation

Reformation sustainable dresses from recycled materials

Sustainability: Climate positive company, creating ethically made dresses from gorgeous low impact materials, including recycled and deadstock fabric.

Styles: mini dresses, midi dresses, maxi dresses, cocktail dresses, sundresses

Sizes: US sizes 0-24 / UK sizes 4-24 petite sizes available

Ships to: Worldwide

Ecothes Rating: 4.5/5

Reformation designs some of the most gorgeous sustainable dresses right now, with styles to suit every occasion.

From midi dresses that compliment your curves to chic mini dresses, you’re pretty much guaranteed to look good in Reformation.

Ref creates and ships all of its products ethically, using environmentally sustainable production techniques. Reformation is a climate-neutral company, meaning it offsets all CO2 created in its supply chain. Ref is on track to be a carbon-positive company, meaning it will remove more CO2 from the atmosphere than it creates by 2025.

3. Cuyana

Cuyana ethical dresses

Sustainability: Sustainable dresses made from responsible materials and an ethical supply chain

Styles: Sustainable slip dresses, mini dresses, and shirtdress styles

Sizes: XS-XL

Ships to: U.S. & International

Less is more with Cuyana, a sustainable clothing brand creating beautiful designs in small batches from sustainable materials. Whatever the season, Cuyana creates a range of casual dresses and head-turning dresses you can dress up or down.

The women-led brand focuses on only creating what it can sell, which reduces textile waste. In addition, Cuyana partners only with ethical suppliers who ensure fair and safe treatment of workers.

Cuyana sustainable dress


Sustainability: Certified B corporation, creating ethical and sustainable womenswear

Styles: Maxi dress and midi dress styles, wrap dresses, mini dresses

Sizes: US 2-14 / UK 6-18

Ships to: U.K., U.S., EU

Baukjen is a British designer creating chic ethical, and eco-conscious clothing, including stylish, sustainable dresses. Each of Baukjen’s delightfully designed dresses can be worn casually or dressed up and make the perfect addition to your sustainable wardrobe.

Baukjen also offers a clothes rental service, excellent if you’re looking for the perfect dress for a special occasion; simply rent the dress for a specified period, and return once the big day is over. Clothes rental is a great way to lower our clothing consumption, and it means clothes aren’t thrown away or hidden at the back of a closet once worn.

5. Amour Vert

Amour Vert sustainable summer dresses

Sustainability: Sustainable fabrics made by partner mills for higher quality. Each Amour Vert piece is made in California. Trees are planted for every tee sold.

Styles: Sustainable summer dresses, print dresses, minimalist dresses, midi dresses

Sizes: XXS-XXL

Ships to: the US & International

If you’re looking for a sustainable summer dress you can wear for a picnic in the park or a wine tasting, check out Amour Vert.

Amour Vert is a USA-made brand creating stylish, high-quality dresses from eco-friendly materials. Each piece is made with love in California in small batches to reduce waste. In addition, Amour Vert partners directly with mills to create their signature fabrics, meaning each article of clothing is fully traceable from raw material to finished product.

6. Whimsy + Row

Whimsy + Row sustainable party dress in navy silk made in the USA, the design features a minimal dress made from silk

Sustainability: Carbon neutral, sustainable, and ethical clothing brand, creating all designs in their Los Angeles studio

Styles: Party dresses, silk slip dresses, summer dresses, wedding dresses and wedding guest dress styles

Sizes: XS-XL

Ships to: Free U.S. Shipping & International shipping (taxes may apply)

Whimsy + Row is an American sustainable clothing brand, producing its chic clothes ethically in their Los Angeles studio.

Their designs are brought to life with responsible and sustainable fabrics, including GRISOCARE, a blend of ECOVERA™ VISCOSE, derived from certified renewable wood sources using an eco-responsible production process. This eco-friendly fabric is OEKOTEX STANDARD 100 certified and completely biodegradable.

Whimsy + Row also produces dresses from materials including organic cotton, linen, and deadstock fabric.


Sustainability: Handmade to order Oeko-Tex certified linen dresses, created ethically in Lithuania

Styles: Linen wrap dresses, mini dress styles, midi dresses, maternity-friendly dresses

Sizes: US 2 – 18

Ships to: Worldwide

Linen dresses aren’t only for the summer as the proves.

The Linen Handmade Studio creates a collection of dreamy dresses you can wear all year round. The brand crafts its bespoke dresses from Oeko-tex-certified linen, meaning they’re free from any chemical nasties. You can choose from a range of colours and styles, and each dress is hand made to your unique order.

The slow fashion brand works on a handmade-to-order model to reduce waste and ships its timeless designs in compostable packaging.

8. Alohas

Alohas sustainable dresses

Sustainability: Zero-waste clothing created ethically in small batches from sustainable materials

Styles: Sustainable summer dresses

Sizes: XS-XL

Ships to: Worldwide

You may already be a fan of Alohas chic footwear, but did you know the brand also creates jaw-dropping dresses?

The zero-waste brand designs minimalist dresses perfect for a hot summer date with the beach.

Alohas offers an on-demand way of shopping to prevent overproduction and fashion waste in landfills – an essential step as it’s expected that there will be 148 million tons of fashion waste worldwide.

Each sustainable dress is created ethically using non-toxic dyes.

Alohas minimal dress


Monsoon S.E.W Collection sustainable dress, party dress in black and gold

Sustainability: S.E.W. collection creates beautiful designs from sustainable fabrics, including recycled polyester and LENZING ECOVER.

Styles: Midi dresses, formal dresses, cocktail dresses, work dresses.

Sizes: U.K. 6-24

Ships to: U.K. & International

Monsoons S.E.W. collection delivers beautiful designs from sustainable fabric alternatives, including organic cotton, recycled polyester, and LENZING ECOVERO, a planet-friendly alternative to viscose.

The S.E.W. collection is a step in the right direction for Monsoon, committed to re-engineering their clothing practices to be more environmentally friendly.

10. Araks Silk Slip Dress

Araks blue slip dress pictured on Zoe Isabelle Kravitz

Sustainability: Handmade in N.Y.C., lingerie and slip dresses from eco-friendly fabrics

Styles: Silk slip dresses

Sizes: XS-XL

Ships to: U.S. & International

Araks is a sustainable brand specializing in consciously crafted lingerie and swimwear. We’ve showcased them here because their gorgeous Cadel silk slip dress is too good not to include.

If you’re looking for the perfect slip dress for summer days or to dress up for a formal occasion, the Cadel slip, created from 100% silk, comes in seven gorgeous colors and has been spotted on some famous faces, including Zoe Isabelle Kravitz.

Araks blue sustainable slip dress made from environmentally friendly materials

11. Datura

Sustainability: Dresses from natural fabrics, ethically made in N.Y.C.

Styles: Slip dresses, maxi dresses, and jumpsuits

Sizes: XS-XL

Ships to: U.S. & International (customers outside the U.S. must pay customs duty)

Datura creates timeless, hand-crafted dresses from consciously selected natural fabrics, including silk. Datura makes all of its designs ethically in its N.Y.C. studio.

This slow fashion brand creates versatile, classic, and season-less pieces, promoting the ethos of buying high-quality items that can be worn all year round instead of investing in low-quality pieces that fall apart after one season.

12. Vetta

Vetta capsule wardrobe collection, sustainable dress in black with tie back

Sustainability: Capsule wardrobe essentials from sustainable fabrics and responsible factories.

Styles: Versatile, sustainable dresses which can be dressed up or down

Sizes: XS-XL

Ships to: U.S. & Canada

Vetta creates amazing capsule collections built from practical, stylish pieces that allow you to transform your closet into a more thoughtful, conscious wardrobe; with only five pieces, you can create up to thirty different outfits.

Vetta uses sustainable materials such as Tencel and organic cotton; its sustainable dresses are super practical and can be worn formally and casually.

13. Paneros

Paneros sustainable dresses

Sustainability: Small batch fashion, sustainable materials, responsible manufacturing

Styles: Maxi dresses, mini dresses, sustainable wrap dresses

Sizes: XS-XL

Ships to: the US & International

Paneros is a sustainable fashion brand creating its flattering dresses ethically from sustainable materials. The brand designs stylish dresses in Los Angeles and partners with an ethical supplier in Indonesia who brings their designs to life.

Paneros is perfect if you want to keep up with the latest styles and ensure you’re supporting a sustainable brand.

14. Siizu

Siizu sustainable wrap dress in black

Sustainability: 100% natural and 100% sustainably grown materials

Styles: Slip dresses, linen dresses, wrap dress styles

Sizes: S-L

Ships to: U.S. & International

is an affordable, sustainable fashion and ethical jewelry brand based in N.Y.C., creating playful, sustainable dresses and jumpsuits.

Siizu’s dresses are perfect for everyday wear and dressing up for a party or formal occasion. Siizu is transparent about all of the fabrics used and where it sources the fabric.

15. Mara Hoffman

Mara Hoffman luxury designer creating sustainable and ethical dresses

Sustainability: Ethical dresses created with organic materials including hemp, certified organic cotton, Tencel, and other natural fibers

Styles: Formal dress styles, mini dress, and shirtdress styles

Sizes: XXS-3X

Ships to: U.S. & International

Mara Hoffman is a luxury fashion designer creating cutting-edge garments from sustainable fabrics.

After realizing the need for sustainable and environmental change, in 2015, Mara Hoffman began a journey that has transformed its entire manufacturing process towards more sustainable and ethical production methods.

Mara Hoffman is committed to supporting a range of environmentally friendly organizations

striving for change within the fashion industry and beyond, these organizations include Fashion PositiveEarth Matter, and Canopy.

16. Aligne

Aligne sustainable dresses

Sustainability: Sustainable dresses created with eco-friendly and low-impact materials.

Styles: Mini dresses, midi dresses, slips, and formal dresses

Sizes: UK 6-22

Ships to: the UK only

Sustainable UK-based clothing brand Aligne creates dreamy dresses and clothing from eco-conscious materials, including organic cotton, recycled polyester, and EcoVero™.

The UK brand creates on-trend, playful mini dresses and stylish midi dresses, perfect for all seasons.

Aligne offers free UK shipping on all orders, and every product is protected by a biodegradable poly bag and shipped in a box made from sustainably sourced, recycled cardboard.

17. Girl of the Earth

Girl of the earth sustainable vintage dresses

Sustainability: Handmade in NYC dresses from deadstock fabric

Styles: Vintage-inspired dresses

Sizes: XS-XL

Ships to: Worldwide

Are you looking for vintage-inspired dresses with a modern twist? Then check out Girl of the Earth. The NYC-based brand sources deadstock materials from 1930-1990 and uses them to bring its vintage-inspired designs to life.

The brand handcrafts and curates its collections between its NYC studio and Lisbon, where vintage lover Ruby Sinclair spends her time. Each bespoke style is made in limited amounts, so make sure you snap yours up fast!

Girl of the earth sustainable vintage dresses


Ninety Percent ethical and sustainable dresses

Sustainability: Sustainable clothing brand using ethical production and responsible fabrics. Ninety Percent donates 90% of profits to charity organizations

Styles: Minimalist dresses, knitted dresses

Sizes: XXS-XXL

Ships to: Worldwide

London-based sustainable fashion brand creates minimalist-inspired luxury basics from responsible materials, including organic cotton, Tencel, and other eco-friendly fabrics.

Ninety Percent creates ethical clothing in two Industry changing ethical factories in Bangladesh. The brand’s main partner factory is the first factory in the country to offer health insurance, fair wages, and a free lunch every day for all workers.

The brand donates 90% of its profits to charity organizations, which you can vote for on their website. Organizations include charities that empower women living in poverty to reach their potential and non-profit organizations which protect and sustain wildlife.


Stella McCartney sustainable maxi dress created in yellow silk

Sustainability: Luxury ethical and sustainable clothing brand using sustainable materials

Styles: Sustainable formal dresses, designer dresses

Sizes: US 0-8 / UK 6-12

Ships to: Worldwide

Luxury fashion brand Stella McCartney has been passionate about sustainable and ethical clothing for over two decades. The designer has pioneered vegan fashion and is committed to promoting good labor standards and protecting human rights.

The designer’s R.T.W. sustainable dress collection features a gorgeous selection of sustainable and ethical dresses, including unique maxi dresses perfect for a formal occasion and chic mini dresses created from responsible materials, including organic cotton and recycled fabrics.

20. Pact

Pact organic cotton summer dress

Sustainability: Affordable, sustainable dresses created in Fair Trade Certified Factories from organic cotton.

Styles: Sustainable summer dresses, minimalist dresses, maxi dresses

Sizes: XXS-XXL

Ships to: Worldwide

Pact is your go-to brand for minimalist, easy-to-throw-on organic cotton dresses, perfect for warm summer days.

Pact’s comfortable and breathable dresses are available in stylish colors and prints to suit every occasion.

The brand creates its ethical dresses in Fair Trade certified factories from organic cotton, which is grown without the use of harmful pesticides or toxic chemicals. Plus, by switching to organic cotton clothing, we can reduce our greenhouse gas emissions by up to 49%.


Sustainability: Affordable eco-friendly dresses created in audited factories from sustainable materials.

Styles: Sustainable summer dresses

Sizes: UK 6-18

Ships to: the UK & International

Meet Omnes, a climate-positive sustainable women’s clothing brand creating on-trend dresses from sustainable materials.

Omnes ethically creates affordable clothing in fully audited factories and is transparent about where your clothes are made. In addition, the brand designs its stylish dresses using responsible materials, including organic cotton, recycled materials, and eco-friendly fabrics, including Tencel and more.

Wrapping Up: Sustainable and Ethical Dresses

We hope you enjoyed the article and you’ve found the perfect eco friendly dress. If you have any sustainable dress brands you think we should add to the list, please let us know in the comments below.

We think you’ll also like our sustainable jumpsuit, sustainable skirt, and ethical blazer guides.

Make sure to also check out our guide on sustainable heels, to pair with your new dress!

You might also need…

Need the perfect pair of sustainable heels to complete your look? Check out Bhava the perfect brand if you’re looking for on-trend, sustainable vegan heels.


Bethany Worthington BSc (Hons) (she/her) is the Sustainable Fashion Editor and Co-founder of Ecothes. She has a passion for the environment, and a long love of all things clothing, and combines those two interests with Ecothes. In her free time she loves dancing, hiking in the countryside, and laughing with friends.

Articles: 207

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