8 Ethical Fashion Brands That Have The Most Stunning Formal Dresses

Say yes to the dress!

Is it even a good day if you don’t have on a chic dress, a striking pout, and a pair of stunning stilettos? Hell, no! 

Whether you want a formal dress for work or a sexy evening gown, we’ve listed all of them below. If there’s something we want for you, it is glam and class combined with these stunning sustainable dresses. 

Sustainable brands that make party, cocktail, and formal dresses 

Who are we kidding? Amour Vert, Loud Bodies, and Quince have always been our go-to ethical fashion brands for their beautiful dresses. Now is the time for you to stand out in these gowns too.

1. Rosemary Nouveau Fleece Dress by Amour Vert


If you’re looking for spectacular sustainable dresses, then Amour Vert is the place to start. This conscious clothing brand makes 96% of its pieces right here in the US.  

Being a cult favorite for its statement pieces, you’ve got to add this must-try ethical fashion brand to your carts, RN! 

About the dress:  

Time to steal the show with one of the best sustainable party dresses that will stand out at any event! This formal dress, which comes with cute puff sleeves and a crewneck, is a perfect fit.  

It’s one of those ethical evening dresses made from a perfect blend of organic cotton and modal to give you a night to remember.

2. Montrose Black Tie Dress by Mata Traders

woman wearing cute black dress by ethical fashion brands

Little black dresses are what many of us live for! And we’d be lying if we said Mata Trader’s stunning ethical evening dresses aren’t worth it. 

Mata Traders is one of those ethical fashion brands which falls under the sustainable marketplace — Made Trade. From everyday wear to pretty evening dresses, the brand has forever been on our shopping radar.  

Now is the time to add these gorgeous designs to your ethical wardrobe! 

About the dress: 

Made from earth-friendly fabrics like organic cotton, this sustainable dress is an easy go-to for your next formal event. This chic clothing piece comes with a separate belt that is best paired with some smart vegan footwear

3. Kaila Knit Dress by Reformation

woman wearing red formal dress by sustainable fashion brand

If we’ve already added something to our shopping cart, it’s this sustainable red dress! 

Reformation is one of the most ethical fashion brands that puts the planet (and people) first. From sustainable wedding dresses to casual dresses, this is a label that you can (always) count on. They employ only sustainable practices by using earth-minded fabrics for their fair-trade dresses.  

To top it off, this ethical brand offers the best feminine garments for that ‘perfect’ fit. 

About the dress: 

This cute ethical dress is slim-fitting with a V-neckline and a small front slit. Without being too snug, the red outfit is bold enough for a party and classy enough for a formal event. 

4. Tencel Jersey Tank Maxi Dress by Quince

sustainable dresses by ethical fashion brands

Perfect for its timeless designs, San Francisco-based Quince is best known for its fair-trade clothing. Apart from being an ultimate fashion house, the brand’s affordable prices are another reason to go for their dresses.  

Moreover, you can flaunt these sustainable dresses, knowing they are directly shipped from their local factories. 

About the dress: 

Who knew sliding into a sleeveless, scoop-neck maxi-length Tencel dress would be so much fun?  

Designed for ultimate versatility and stretch, Quince’s feminine dresses should definitely be next on your radar. Popularly known as one of the best ethical fashion brands for their sustainable dresses, we couldn’t help but include Quince in this list. 

5. Hypatia Dress Black Lyocell by Loud Bodies

cute black dress by ethical fashion brands

Loud Bodies is one of those ethical fashion brands you just can’t say no to. 

From employing only artisan fabrics to sustainable designs, the label seldom goes wrong with their collection. Loud was founded on the belief that size shouldn’t dictate style. This sustainable brand creates conscious clothing that ranges from XXS–10XL. (WHAT!) 

The brand offers free tailoring and custom clothing for all body types (that may otherwise be hard to find.) Most of their pieces of clothes are made-to-order with eco-friendly materials to ensure you look your best, always! 

About the dress: 

This sustainable dress is absolutely gorgeous! Too feisty to be formal, too classy to be casual, this black dress is the best bodycon silhouette.

6. Indigo Waffle The Dawn Dress by Christy Dawn

Christy dawn ethical dresses

Christy Dawn is one of those sustainable fashion designers who never fails to amaze us with her unique silhouettes. What we love more is how the label only employs transparent pricing and sustainable practices for its minimalist pieces.  

From size 3X to petite sizes, finding aesthetically pleasing luxury pieces here is the easiest thing ever. Better yet, if bohemian, casual dresses are your thing, Christy Dawn is the place to shop! 

About the dress: 

This namesake dress was one of the first ever minimalist pieces Christy ever designed. You can sizzle in this dress anywhere, from brunch and cocktails to formal dinners and weddings.  

Pair this beauty with heels, sneakers, or virtually anything comfortable to raise the glam quotient any day!

7. Strappy Midi Dress Elderberry by Wildflo Studio

sustainable dresses by ethical fashion brands; wildflo studio

Wildflo Studio is one of those ethical fashion brands that never lets you down with their sustainable fashion pieces. From sustainable dresses that need no introduction to formal wear that’s bound to make a statement, they have it all.  

This Toronto-based, loungewear brand’s ethical formal dresses are the epitome of luxury pieces with class! 

About the dress: 

Being unparallelly chic, this double-layered midi dress has self-tie straps. It is one of the most gorge sustainable dresses we found, perfect for most body types.  

Made using upcycled materials and non-toxic dyes, this is the prettiest slip dress ever. 

8. Goddess Flared Dress by Hope For Flowers

blue evening dress by ethical fashion brand; hope for flowers

Hope For Flowers was founded on three guiding principles: the health of people, the planet, and equity in profit.  

This brand uses sustainable materials like organic cotton, organic linen, and Tencel™ for their ethical formal dresses. It is one of those ethical fashion brands that source only from factories, pays living wages, and ensure safe conditions for its workers. 

About the dress: 

We are in total awe of this draped and shirred bodice, flared skirt dress. Dress it up with a pair of heels and a blazer for that ultimately classy formal look.  

This luxury piece is a bit pricey, but trust us, it is worth the glam!

Sustainable formal dress FTW

red ethical dress
GoodGuilt / Canva

Formal dresses make you look classy and help you feel confident. In addition, when you choose sustainable formal dresses, you’re doing your extra bit for the planet (along with yourself). 

Which of these ethical evening dresses entice you to go out on for date night or a formal dinner, right away? Let us know your pick. 

These bold, chic dresses are so pretty, you can wear them with any of these sexy black heels to up your glam quotient!

Frequently Asked Questions 

  1. What are sustainable dresses? 

For a dress to be labeled ‘sustainable,’ it needs to be durable, affordable, ethically created, and eco-friendly. Fortunately, certain ethical fashion brands offer some of the best sustainable dresses made from eco-friendly fabrics like recycled fibers, linen, and organic cotton. 

  1. What to look for in an ethical and sustainable cocktail dress? 

Thankfully, finding a sustainable and ethical cocktail dress isn’t problematic anymore. Look for brands that use natural fabrics like organic linen or traceable cashmere in their clothing.  
Some of which are: Eileen Fisher, Stella McCartney, and Boden. 

  1. What are the best sustainable fabrics for formal wear? 

Organic cotton, Tencel™, linen, and viscose are some of the best earth-minded fabrics used to make formal wear. These sustainable fabrics are used for their natural flow, breathability, and non-toxic properties. 

  1. What are the best brands for affordable, sustainable dresses? 

Some of the best sustainable brands for pocket-friendly and ethical dresses are: 

  • Amour Vert 
  • Loud Bodies 
  • Able 
  • Pact
  • Kotn 
  • VETTA 
  • Tentree 

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