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We’ve reviewed hundreds of sustainable fashion brands — these are our top picks for the best eco-friendly suits for women.

Suits are a timeless and chic wardrobe staple that are super versatile to wear for a variety of occasions. We find ourselves reaching for our favorite blazers and tailored trousers for not only important meetings and interviews, but also for formal dinners, cocktail parties, graduation or award ceremonies, and even on the day to day for an epic fashion statement.

Consider these six brands offering sustainable women’s suit separates, from double-breasted blazers made from silk and organic cotton to ponte pants sewn from recycled polyester and linen. While we’re all for buying one suit that’ll match anything in your closet, we’re also eyeing these options below when we want to mix up our look.

Our criteria:

Our team has reviewed hundreds of sustainable fashion brands, and we’ve selected our favorite suits for women from the brands below based on eco-friendly production practices, flattering fits, and modern designs. 

Found your perfect sustainable suit? Take your look to the next level with these ethically made handbags, shoes, and jewelry.

Best Overall | Best For Separates | Best Suit Rental

1. Quince

Best For | Affordable blazers
Sustainability | BCSI-certified ethical production, sustainable & organic materials, OEKO-TEX certified, virgin plastic-free
Size Range | XS–XL
Separates Starting At | $40 for bottoms, $70 for blazers

For suit separates that won’t break the bank, look no further than Quince. Here you’ll find classic styles in organic cotton, European linen, and wrinkle-free crepe along with ponte pants, joggers, and chinos—all responsibly and sustainably made. Our favorites are the relaxed open blazers, ideal for childcare pickups, donor meetings, and Casual Fridays with the executive team. Get ready to step out and show off (and enjoy free shipping and free one-year returns along the way).

2. Sézane

Best For | Feminine suit styles
Sustainability | Certified B Corp, OEKO-TEX certified sustainable & recycled materials, recycled packaging, responsible production, powered by renewable energy
Size Range | 0–16
Separates Starting At | $125 for bottoms, $225 for blazers

Sézane brings Parisian styles from the runway to your wardrobe. Made in ateliers throughout Europe, this certified B Corp creates timeless, feminine, and sustainable pieces perfect for the working woman. Nearly every fabric used is sustainable or recycled, packaged in recycled containers, and produced via renewable energy; the only lasting impact you’ll see is the one in your closet. We’re obsessed with Sézane’s blazers and pants, designed with deeply rich hues and classic patterns.

3. Kotn

Best For | Suit & skirt combos
Sustainability | Certified B Corp, ethical production in Portugal, sustainably sourced cotton
Size Range | XXS–XXL
Separates Starting At | $128 for bottoms, $248 for blazers

Inspired by North African fashion (given its roots in Egypt!), Kotn’s suiting collection effortlessly combines both the tailored fitted look with a baggy one…and it works! Every detail—down to the stitched necklines—has been made ethically by garment specialists in Portugal, using the best cotton twill around. Proceeds from Kotn’s sales go to support schools, farms, and families in Egypt with thousands of lives changed for the better—and more to come. You can find our editor wearing the brand’s slouchy suiting in Ginger—it’s a truly lifetime-worthy set. Just pay close attention to the inseam length on the trousers (a generous 32″) if you have shorter legs, as you may have to work with a tailor for the best fit!

4. Rent the Runway

Best For | Suit rentals
Sustainability | Displaces new clothing production, minimizes clothing waste, offsets 100% of carbon emissions 
Size Range | Varies by brand
Separates Starting At | $84/first month for 5 items (subscription-based service)

Looking to stay on a budget, but love switching up your suits? Rent the Runway offers the best of both worlds! This subscription-based service allows you to rent designer looks for an affordable monthly fee. Starting at $84, you’ll be able to select 5 items of clothing from over 750+ luxury designers to try on, keep, or even purchase for a discount. Here you’ll have exclusive access to elevated blazers and dress pants from brands like BLANKNYC, Maje, and Scotch & Soda. You’ll even rcieve 1:1 personal styling so you can rock your new pieces with all the confidence. If you aren’t ready to commit to a subscription, Rent the Runway offers 1-time rentals, which is perfect for those one-off special occasions. Sign us up!

5. OhSevenDays

Best For | Vintage styles
Sustainability | Deadstock & OEKO-TEX certified materials, responsibly made in Turkey
Size Range | XS–XL
Separates Starting At | $140 for bottoms, $235 for blazers

Based in Istanbul, OhSevenDays makes slow fashion pieces out of fast fashion’s surpluses. Sewn locally in a fair trade workshop, every garment is made in small batches using only OEKO-TEX certified fabrics. As for the styles themselves, the brand’s silhouettes are professional and reminiscent of 1970s fashion; think Leon Bridges’ flared pants with Cher’s plaid blazer! Best of all, the team offers custom orders (at no extra cost!) if you need a specific size, and its Zero Waste Misfits program carries plenty of marked down items, too. OhSevenDays ships worldwide and is available at a number of stockists.

6. Reformation

Best For | Leather blazers
Sustainability | Climate Neutral Certified, Leather Working Group Certified tanneries, sustainable & regenerative fabrics
Size Range | XS–XL
Separates Starting At | $158 for bottoms, $278 for blazers

Looking for a blazer that doubles as a coat? Consider Reformation’s leather blazers, made to last and to insulate. The brand sources leather only from LWG-certified tanneries that prioritize chemical innovation and low impact production, and dry cleaning is recommended to extend the longevity of each blazer. (And if you’re not a fan of leather, worry not—Reformation has many other sustainable suit and pant styles to check out!) Channel your inner (and work-appropriate) Catwoman, and thank us later.

Featured image by Sézane