We’ve worn and written about slow fashion for a decade — these are our favorite brands for plus size sustainable clothing that are ethical, eco-friendly, and offer sizes for XXXL and up.
For sustainable fashion to transition from niche to normal, it’s vital that fair fashion be accessible to everyone who wants to engage in it — and that includes thoughtfully made plus-size clothing. For so long, the path to adopting the slow fashion movement was blocked as brands failed to offer inclusive sizes. But not so much anymore!
Why is it so difficult to find sustainable plus size options?
Finding sustainable plus-size options can be tricky because many brands still overlook the demand for inclusive sizing, especially in the slow fashion world. Sustainable clothing often requires more specialized materials and production methods, which can make it harder to scale for a wider range of sizes. Plus-size designs also need more attention to fit and structure, which some brands are hesitant to invest in. Unfortunately, these challenges all boil down to the lingering stigma and discrimination against plus-size people in the fashion industry.
However, things are improving as more brands realize the importance of size inclusivity in sustainability. More companies are now offering extended sizes, focusing on better design and fit for plus-size bodies. The push for body positivity and diversity is also encouraging more eco-friendly brands to expand their size ranges, creating more options for everyone. We’ve taken the hassle out of searching for good quality sustainable plus size clothing, and are sharing the best sustainable gear for sizes XXXL and up so you can express yourself through the clothing you love!
Our criteria:
Our editors have worn and loved sustainable fashion for a decade or more, but finding plus size options can be difficult. These are our favorite sustainable brands offering plus sizes that are both ethical and eco-friendly. We’ve noted the size range for each brand in the write-ups below. We regularly update this list with emerging plus size brands that meet the following criteria.
- SUSTAINABLE | We’ve selected brands that prioritize sustainability by using natural and organic materials, low impact processes, and recycled/upcycled materials in their pieces whenever possible — and we’ve noted the certifications that back this up.
- BRAND ETHICS | These brands all have fair labor practices that ensure the people making your clothes are safe and compensated. Many of these brands also have give-back programs that replenish their communities.
- ECO-FRIENDLY | From clean sourcing and manufacturing processes to low-waste production, the brands on this list aim to have a low impact on the environment. We’ve noted brands that have carbon and climate neutral certifications, too.
Looking to complete the look? Check out our guides to responsibly made shoes and handbags.
Best Overall | Best Plus Size Denim | Best Plus Size Activewear
1. TomboyX
Size Range | Up to 6X
Price Range | $ — $$
TomboyX makes unisex undergarments, activewear, swimwear, loungewear, and accessories for bodies of all shapes and sizes. These are designs that are meant to fit who you are, how you are, as you are. Every garment is produced without harmful chemicals, and the brand uses a water recycling program in its production. TomboyX also works directly with suppliers and factories, caring for their workers across their supply chain. If you’re looking to update your top drawer this is the shop for you!
Customer Review | “Really good sizing and the seams are good (not scratchy or irritating!). The fabric is lovely and soft. Looks really excellent on!” – Sea S. (Read all reviews.)
2. Warp + Weft
Size Range | Up to 24
Price Range | $$
Warp + Weft is a TGT fave for its sustainable practices and excellent denim. The family-owned brand believes that in order to look great, the denim has to fit right (no argument here!) and that’s why their collections are size inclusive. No one wearing their goods has to suffer from a waistband that gaps or digs, which sounds great to us!
3. Girlfriend Collective
Size Range | Up to 6XL
Price Range | $ — $$
Girlfriend Collective is a revolutionary activewear brand that’s using recycled plastic to create comfortable and durable leggings, sports bras, and swimwear that you’ll wear time and time again. The brand’s dedication to transparency is clear on the About Page, where you can learn about the entire production process, the factory it partners with, and its fair labor initiatives and certifications. With sizes that go up to 6XL, these pieces are designed to easily go wherever your next adventure calls you.
Customer Review | “Love this bra/top! I have a weird bra (size 44B) and I honestly hate wearing real bras and stick to sports bra/bralettes. This is a great bra. Makes my chest look good and covers the fat on my side. I’ve used it as a top too and it does ride up a little as i wear it but i don’t mind. I recommend them and want them in different colors.” – Kiara C. (Read all reviews.)
4. EILEEN FISHER
Size Range | Up to 3X
Price Range | $$$ — $$$$
From sustainable and organic fibers to a squeaky-clean supply chain and focus on human rights, EILEEN FISHER’s ethical approach is multi-faceted. In terms of aesthetics, expect effortless staples in muted tones. Not content with simply scaling the size range up a few notches, the company has a dedicated Plus collection, which is designed to be flawlessly proportioned up to a 3X. Intentional every step of the way.
Customer Review | “I just received this pant in wren, the fit is so flattering. The tummy area is comfortable, beautiful drape falls like a column to the wide leg. Definitely ordering in more colors. This will live in my wardrobe for years.” – JewlGal (Read all reviews.)
5. Big Bud Press
Size Range | Up to 6XL
Price Range | $$ — $$$$
The Los Angeles-based Big Bud Press gives off good vibes with its vibrant and, dare we say, groovy apparel. Ethically made with local Californian contractors, the rapidly-growing brand specializes in inclusive, unisex everyday wear so all genders can rock custom-dyed trousers or statement jumpsuits. With sizes ranging from XXS through 6XL, this small business is one of the most size-inclusive brands on the list.
6. Loud Bodies
Size Range | Up to 10XL; free custom tailoring
Price Range | $$ — $$$
Loud Bodies is loud and proud when it comes to their belief that everybody deserves to feel beautiful. This brand offers sizing from XXS through 10XL, and if you have an atypical body type or don’t fall within that range, Loud Bodies will customize pieces for you, free of charge. And most items are made-to-order with only sustainable materials and shipped in plastic-free packaging, ensuring you get exactly what you asked for — without the added waste.
Customer Review | “This is probably my favorite loudbodies dress ever. The fabric is very soft and the print is absolutely stunning. The tailoring is perfect for my size and the dress fits like a dream. It’s also very light, so perfect for summer without bra. And there are pockets ? how more perfect could it get ? thanks!” – Elyse G. (Read all reviews.)
7. Reformation
Size Range | Up to 3X
Price Range | $$ — $$$$
Reformation is dedicated to crafting sustainable fashion for all by aiming to eliminate virgin materials and create 100% recyclable clothing. The company prioritizes eco-friendly practices through innovative materials (like Tencel Lyocell and recycled fabrics), nontoxic dyeing processes, and limited-edition collections that prevent overproduction. Reformation also encourages circular fashion by promoting garment care, reselling, and recycling through initiatives like RefRecycling. Their extended size collection — available up to 3X — includes eye catching dresses, tops, skirts, denim, and even special occasion wear!
8. Quince
Size Range | Up to 3X
Price Range | $ — $$
Quince believes that quality products should be a standard, not a luxury. The company uses eco-friendly materials such as organic cotton, linen, recycled polyester, and even sustainable cashmere throughout their clothing — all at affordable prices. They are able to do this by partnering with global factories that prioritize fair wages and responsible production, rather than outsourcing, wholesaling, or relying on storefronts. Quince’s extended size collection is available up to 3X and guarantees you’ll find staple closet pieces you’ll be wearing for years on end.
Customer Review | “Beautiful wardrobe basics that will never go out of style. Great quality and feels so soft. Light enough for all seasons. I’m normally a size 14 but ordered up (1X) for extra comfort and a more relaxed look.” – Cathay W. (Read all reviews.)
9. The Standard Stitch
Size Range | Up to 5X
Price Range | $ — $$
The Standard Stitch’s mission is to “create clothes that are as gentle on the earth as they are on your body — every body.” And it’s achieving just that, with inclusive sizing up to 5X. (If you don’t see your size, you can also get in touch!) Its line of tees, tanks, and loungewear are perfect for mixing and matching in our closets, all made with recycled and/or organic cotton. Even the bright colors are achieved using low-impact and nontoxic dyes. Checks all the boxes!
Customer Review | “This is my new favorite dress. The material is buttery soft and hugs in all the right places. So comfortable. I received so many compliments when I wore it.” – Ashley C. (Read all reviews.)
10. Loup
Size Range | Up to 4X
Price Range | $$$
Inspired by the likes of Brigitte Bardot and Audrey Hepburn, Loup is a brand combining New York City ethics with Parisian style. Designed and produced locally in the Big Apple, this womenswear brand focuses on curve-friendly clothing, particularly pants and jumpsuits. And don’t worry about wear and tear — Loup will help with repairs or offer you store credit for any fixes you paid for.
11. alder apparel
Size Range | Up to 6X
Price Range | $ — $$$
alder apparel is all about playful, inclusive outdoor recreation apparel that focuses on fun and accessibility, rather than just performance. Founded by childhood friends Mikayla Wujec and Naomi Blackman, they aim to revolutionize outdoor clothing through community-driven design and ethical production. The brand’s commitment to reducing their environmental impact includes implementing upcycling and repair programs, working with transparent partners, and producing long-lasting, durable garments. And when it comes to their sizing, alder’s clothing ranges from an impressive XS — 6X! Check out their detailed size guide to find your perfect fit.
Customer Review | “I bought these pants in 2020, and they’re my favorite travel pants! stretchy, not too warm, not too cold, plenty of pockets — I actually can’t remember the last time I wore different pants on a road trip or plane (esp for long haul). Great for hiking too! They have held up super well — not stretched out, no fading, no holes, and going 4+years strong. so durable I have a hard time justifying buying a second pair…” – Stack (Read all reviews.)
Featured image from The Standard Stitch
