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Wedding season is upon us, so we’ve compiled a list of more sustainable wedding guest outfits from top-rated brands.
More sustainable wedding guest outfits inspiration
Weddings can be stressful—for the couple, their families, and yes, sometimes even their guests. For the latter, it’s often about deciding what to wear and the pressure to invest in a new outfit for the occasion. And while it might seem tricky to find something you can wear beyond the one-day celebration, we’re here to help.
First, we recommend checking what’s already in your wardrobe—try restyling an outfit you’ve already worn, or pairing items that you’ve never worn together before to create a new outfit combo. If that doesn’t work then it’s time to explore secondhand options. Outfit rental is also an increasingly popular solution for event dressing. Some of our favourite platforms are Rent the Runway, Hurr, By Rotation, Vow to be Chic, Glam Corner, and MyWardrobe.
And if you need to buy something new, scroll on for our list of top-rated brands that’ll help you dress to the nines in more sustainable wedding guest attire—whether it’s a clutch bag, gown, suit, or accessory.
Buying occasionwear can get expensive, and while more sustainable clothes do cost more than the ultra low prices we’re used to fast fashion serving up, there is still a spectrum. In this round-up, we’ve included some more affordable brands, such as OMNES, SeamsFriendly, and Ninety Percent, for those shopping on a smaller budget.
Clothes
OMNES
OMNES is a more responsible and more affordable UK-based brand creating high quality womenswear. “We created OMNES to help change the way you shop, wear and think about clothing. And to encourage the rest of the industry to do it, too,” says the brand.
Find most items in sizes 6-20.
Ninety Percent
Ninety Percent is a British label making stylish womenswear. It was founded with the mission to share 90% of its profits between five charitable causes and those who make its collections happen, and it publishes details of its suppliers and factories on its website.
Find collections in UK sizes 2XS-2XL.
Jiwya
Offers
Jiwya – Site-wide
100% plant-based shirts, dresses, everyday jackets that breathe with your skin. Styles that speak with their silhouettes and their values. Exclusive 10% off with code JIWYAGOOD10 (First order only.) (Ends: 25 JUN)
Checkout code: JIWYAGOOD10
Jiwya is a fashion brand using lower-impact plant-based materials, and heritage techniques including hand-spinning and hand-weaving.
Coco & Kandy
Coco & Kandy focuses on making uncomplicated, high quality clothes for warm weather. The Bulgarian brand uses lower-impact materials, traces most of its supply chain and visits suppliers regularly.
AYANI
Timeless, feminine, and effortlessly elegant, AYANI embodies affordable luxury clothing designed to bring ultimate comfort and confidence every time you wear them.
Christy Dawn
Christy Dawn is a minimalist showroom for vintage-inspired women’s clothing and footwear, locally made with surplus fabric. The US brand rates “Great”, making it a fabulous option for your wardrobe.
Find the clothes in standard sizes XS-XL, or shop the Extended and Petite collections.
The Summer House
Offers
The Summer House – Handwoven Basket
Beautiful clothing for dates, dinners, art evenings, and social moments – elevated, effortless pieces designed for small occasions. Receive a complimentary handwoven basket on orders above USD500 with code SUMMERBASKET (Ends: 13 JUN)
Checkout code: SUMMERBASKET
The Summer House – Top (US, CA, EU, UK, AU, NZ)
Exquisitely hand embroidered statement top with fine cut work edges. A garment that is designed to be an heirloom. Exclusive 20% off tops with code SUMMERTONI (Only available in the US, Canada, the EU, the UK, Australia, and New Zealand.) (Ends: 13 JUN)
Checkout code: SUMMERTONI
The Summer House – Site-wide
Beautiful, conscious clothing for dates, dinners, art evenings, and social moments – elevated, effortless pieces designed for small occasions. Exclusive 15% off with code GOODSUMMER (Ends: 13 JUN)
Checkout code: GOODSUMMER
The Summer House – Complimentary Scarf
Beautiful clothing for dates, dinners, art evenings, and social moments – elevated, effortless pieces designed for small occasions. Get a complimentary limited-edition scarf with an exclusive print on orders above USD300 with code SUMMERSCARF (Ends: 13 JUN)
Checkout code: SUMMERSCARF
The Summer House creates beautiful womenwear in India using locally made, lower-impact fabrics. It also partners with local artisans and NGOs to provide opportunities to those in the region. Look out for its elegant prints and flowing silhouettes.
Find the range in sizes XS-XL.
SeamsFriendly
Offers
SeamsFriendly – Reversible and Convertible Clothing
The most sustainable wardrobe is a smaller one. These pieces flip, convert, and transform. Multiple looks from one garment. Handcrafted in natural fabrics. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUN)
Checkout code: SF-GY10
SeamsFriendly – Most Loved Designer Styles
These styles have been custom-made for hundreds of women, each to her exact measurements. Not off-the-rack. Made by artisans, made when you order, made for you. Exclusive 10% off with code SF-GY10 (Sale items excluded.) (Ends: 26 JUN)
Checkout code: SF-GY10
SeamsFriendly creates beautiful tailored pieces for all body types. It focuses on function and utility in its designs and uses lower-impact materials like organic cotton and linen. What’s more, shoppers can customise the brand’s designs to their exact preferences—change the neck style, depth, sleeve length, garment length, fabric, and more on anything in its array of clothes.
The brand’s product sizing is customisable (for womenswear: bust size range 26″-70″, waist size range 19″-63″, including petite, regular, and tall heights; and for menswear: chest size 34″ to 76″ and above with free custom sizing) to ensure you always find the perfect fit. There’s a kids range (bust: 18″-28″, waist: 19″-26″) available too.
OhSevenDays
OhSevenDays was started by Australian-Canadian Megan Mummery to promote slow fashion and the “power of circularity”. Based in Istanbul, the brand reclaims end-of-roll fabrics from the city’s garment factories and creates sharp, everyday womenswear that’s as wearable as it is responsible. Essentially, it makes slow fashion from fast fashion’s leftovers.
OhSevenDays’ garments are available in sizes XS-XL, or in custom sizing.
SANTICLER
SANTICLER is an US-based label that offers timeless collectors pieces curating modern silhouettes in womenswear. Founded by an early advocate of slow fashion and sustainability, its collections are designed and produced with intention to reduce waste, using more lower-impact materials such as GOTS-certified cotton and responsibly sourced wool.
Find most items offered in sizes XS-L.
Akyn
Founded by sustainable fashion industry legend Amy Powney, Akyn makes contemporary and timeless womenswear using lower impact materials.
ASKET
ASKET has been creating timeless wardrobe essentials since 2015 with revolutionary sizing and fair pricing. The brand disregards seasonal collections, cuts out all the middlemen, and only sells directly to you—putting its entire focus on building a single permanent collection.
Find the range in sizes 2XS-2XL.
Facettes Studio
Facettes Studio is a Parisian brand dedicated to “wardrobe essentials for the multifaceted woman”. It uses upcycled materials and has banned polyester and polyamide from its collections, which are based around suits. Facettes Studio also provides a repairs and alterations service.
Find its clothes in sizes FR 34-44
CARPASUS
CARPASUS is a Swiss menswear brand that makes fine shirts, ties, socks, and pocket squares. CARPASUS uses GOTS certified cotton and manufactures locally to reduce its carbon footprint. It also traces its supply chain and ensures workers are paid a living wage.
Find most products in EU sizes 36-46.
Opera Campi
Founded in 2017, Italian brand Opera Campi creates premium quality garments from locally-sourced raw materials. By using a balanced approach to sustainability, the brand makes conscious choices throughout its supply chain and donates 4% of its profits to social causes.
The brand is inclusively sized from 3XS-3XL.
Artknit Studios
Artknit Studios creates timeless knitwear in 100% lower-impact materials, made responsibly by Italian makers. Its partners are committed to anti-waste practices using only certified and locally-sourced fibres, true to the brand’s motto of “buy less, buy better”.
Find items offered in sizes XS-XXL.
FUTURA Jewelry
FUTURA Jewelry is a New York based responsible jewellery brand. Each piece of FUTURA Jewelry is handcrafted with mercury-free 18kt Certified Fairmined Ecological gold. The brand’s gold comes from the three certified Fairmined mines in the world that mine for gold without the use of toxic chemicals including mercury and cyanide.
Bario Neal
Bario Neal is a custom jewellery designer that creates handmade rings and fine jewellery with conflict-free diamonds and other gemstones. The brand uses lower-impact materials, including reclaimed precious metals, Fairmined gold, and more ethically sourced stones to bring to life each of its uniquely designed pieces.
ARTICLE22
Every piece of ARTICLE22 jewellery is locally handcrafted in Laos using recycled materials from Vietnam War bombs, plane parts, military hardware, and other aluminium scraps. The brand embodies the innovation that the fashion industry needs more of—using recycled materials to produce beautiful globally marketable products, while equipping local artisans with new skill sets and providing them with a sustainable source of income. ARTICLE22 gives back to clear more unexploded bombs in Laos, supports traditional artisans, and donates a proportion of profit to community development for workers.
The range is available in sizes S-XL.
Mashu

Iris Creme Bag – Ships internationally from the UK
Mashu is a British more sustainable vegan accessories label specialising in handbags. Mashu’s environmental rating is “Good”, crafting its exterior with vegan leather alternatives while its interiors feature vegan suede made from recycled polyester, ensuring you never have to sacrifice your morals for style again.
ESSĒN
“I founded ESSĒN in 2016 as a response to a fashion cycle that overproduces more than it carefully crafts, chases trends more than it determines classics, and wastes more than it sustains,” says founder Marre Muijs. The shoes and accessories brand, which limits its production runs and uses low-waste cutting techniques, eschews the fashion calendar in favour of a single, permanent collection.
Agazi
Agazi is a vegan footwear brand from Poland. Its range spans sneakers, sandals, heels, and flat shoes, all made using non-animal-derived materials including hemp and apple skin and grape-based alternative leathers.
Editor's note
Feature image via Jiwya, all other images via brands mentioned. Good On You publishes the world’s most comprehensive ratings of fashion and beauty brands’ impact on people, the planet and animals.
We updated this article on 4 June 2026. Our editors frequently make updates to articles to ensure they’re up to date. We refreshed our round-up of brands and products.
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