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How Millennial and Gen Z Demand Shapes Sustainability in Weddings

World Sustainability Day falls on October 28th, giving wedding pros a unique opportunity to consider what sustainability means for their business and the couples they serve.

Nearly a third (28%) of Gen Z couples included eco-friendly or sustainable options in their weddings, according to The Knot Real Weddings Study 2026. This statistic shows that sustainability is no longer a niche personal preference. For younger consumers, it’s a core value—and one that influences what they buy, which brands they support and how they spend their money.

For wedding pros, the question isn’t simply, “Should my business be more sustainable?” It’s also: “How is consumer demand for sustainability changing what couples expect from businesses they hire?”

Once you understand this shift, you can identify opportunities to differentiate your business, evolve your offerings and communicate your value to the next generation of couples.

Generational values are influencing purchasing decisions

Gen Z now makes up 41% of the U.S. wedding market, showing strong buying power and preferences that successful pros monitor. Millennials are a close second in quantity, but make up for it with an average wedding cost that’s nearly $10,000 higher (at $39,600), the 2026 Real Weddings Study cites.

With Millennials and Gen Z couples representing a significant share of today’s wedding market, it’s especially crucial for wedding pros to understand their expectations.

“When you work in weddings, you age but your clients tend to stay around the same age,” says Annie Lee, principal planner of wedding and event planning business Daughter of Design and founder of local event planner marketplace PLANNIE.com. “If you want to always be in touch with your clients, it’s important to stay up on trends, new tech and their way of communicating and working. If you are young enough to be in business, you are still young enough to innovate!”

With 3 in 10 couples using secondhand decor or upcycled items to minimize food waste and avoid single-use products and make their big day eco-friendly, sustainability is no longer a niche corner of the market.

Sustainability often overlaps with socially conscious and budget-friendly decisions. When it comes to engagement rings, lab-grown center stones account for 61% of all purchases, a whopping 239% increase since 2020, per The Knot’s research. Lab-grown center stones can have a 90% smaller carbon footprint than mined stones. They also avoid the social implications of mining (and they’re certainly more affordable).

Values-based spending translates particularly well to the wedding industry. Couples increasingly want celebrations to reflect who they are and what matters to them.

A wedding is perhaps the most personal event of someone’s life. It’s made up of dozens of purchases spread out across all the vendors a couple hires to make the day go off without a hitch. With couples using an average of 13 vendors for their wedding, every single partner plays a heightened role in this hyper-personal celebration, making it all the more important they align with the couple’s values.

What sustainable consumer behavior looks like in weddings

Knowing that values-oriented couples want sustainable-minded vendors is only half the battle. So what does a wedding featuring eco-conscious elements actually look like?

First, it’s important to understand a key truth: Today’s version of a sustainable wedding doesn’t necessarily mean planning an entirely “green wedding.” Even ad-hoc sustainable elements make a difference. Depending on where their priorities lie, couples make intentional choices, with outcomes like:

• Choosing local or seasonal products: 22% of couples include locally sourced products in their wedding, the 2026 Real Weddings Study says. This reduces transport emissions and supports local businesses.
• Reducing single-use items: Recent trends include ceramic espresso cups or thrifted mugs as wedding guest favors.
• Repurposing ceremony flowers and decor at the reception: Couples can maximize their floral budget and reduce waste in one fell swoop.
• Selecting digital or reduced-waste stationery: Digital enables simple, last-minute changes, too (like QR code seating charts, for example).
• Reducing or donating food waste: Catering vendors might have programs to donate or minimize excess food.
• Choosing businesses with sustainability commitments: More than 1 in 4 Gen Z and Millennial consumers assume companies that don’t share sustainability updates aren’t doing anything at all.

While couples may not explicitly ask for a “sustainable wedding,” sustainability can still influence individual purchasing decisions throughout their planning journey. And at the very least, it doesn’t turn off prospective couples, making it a win-win strategy.

The rise of the “circular” wedding

You may have heard of the “circular economy,” which aims to keep products, materials and resources in use for as long as possible. As it turns out, you can apply this system to weddings, too.

Rather than buying something for one moment or day, then throwing it away, consumers are increasingly interested in buying secondhand, renting, repurposing, reselling and reducing waste.

The circular model is a natural fit for weddings. To tie this model into their big day, couples integrate the following elements:

Feature	Example
Bought secondhand	Pre-owned wedding attire, accessories and decor with added vintage character from sources like Stillwhite, Nearly Newlywed, local estate jewelers and Facebook Marketplace
Reduced	Minimal disposable products and solutions for leftover food, flowers and materials via local compost organizations and sustainable-minded vendors
Rented	Attire, tabletop pieces, furniture, signage and decor from providers like The Black Tux, After the Tone audio guestbooks or local vendors
Repurposed	Florals or decor moved from ceremony to reception
Resold or donated	Wedding items resold or donated after the event (florals can even get a second life at hospitals and nursing homes via programs like Repeat Roses)

The ROI of green: Sustainability can be a business differentiator

Wedding pros have a significant opportunity to stand out in a crowded market by using sustainability as a business differentiator. If couples are considering sustainability when making purchasing decisions, a vendor who clearly lays out their eco-friendly commitments gets an automatic advantage.

This is, of course, in addition to key trust signals couples use to choose vendors (like reviews, awards, responsiveness and complete Storefront profiles on The Knot and WeddingWire). Sustainability as an operational choice and marketing distinction has the potential to strengthen several parts of your business:

• Discovery: Giving values-driven couples another reason to stop and learn about your business
• Consideration: Helping couples distinguish between otherwise similar vendors
• Trust: Showing transparency about how your business operates and what you value
• Connection: Giving couples another signal that you truly understand their priorities
• Efficiency: Back-of-house sustainability improves your bottom line and efficiency, too—and it does so without jeopardizing client deliverables. Annie says, “I love now sending a link to a live timeline rather than sending out paper versions of it when someone might be using an outdated copy and missing the updates!”

Pro tip: Calculate the return on investment (ROI) of sustainability-oriented marketing efforts to see their tangible impact on your business.

Avoid greenwashing: Specificity builds credibility

Using sustainability as a marketing message isn’t about making vague claims of being “green.” It’s about communicating specific, credible practices that matter to the consumers you want to reach.

Since 23% of Gen Z and Millennial consumers rarely believe corporate sustainability claims, it’s crucial to be transparent about what you actually offer and where your limitations lie. Just like a wedding doesn’t have to be fully green to be sustainable, pros don’t have to present themselves as perfect to participate in the sustainability conversation.

Pro tip: Avoid making sweeping claims like “100% sustainable,” “zero impact” or “eco-friendly” without being able to substantiate them.

Instead, focus on answering questions like:

• What do you source differently?
• What items do you (or can you) reuse?
• How can you help couples avoid waste?
• What can be rented instead of purchased?
• What happens to products after the wedding?

Couples can do more with this information than they can with generalizations. And if you’re not sure where to start, begin with your own reasons for going green. 

“Being a sustainable business is something I hope we all strive for, but one thing to note is that it’s still not the majority who seek it out,” Annie says. “It’s not ever really a deterrent, but I would encourage businesses to be sustainable for the good of it and not just for outside perception.”

Sustainability is ultimately about understanding your customer

With more couples prioritizing eco-friendly or sustainable elements in their weddings, understanding how to improve your vendor offerings is a smart choice. 

Millennial and Gen Z couples are bringing their broader shopping behaviors, values and expectations into wedding planning. The rise of renting, repurposing and other circular behaviors shows how sustainability can coexist with what couples already care about—namely authenticity, budget and a celebration that feels distinctly their own.

For pros, responding to this shift isn’t about chasing a trend. It’s about understanding what increasingly matters to the customers they serve. With Gen Z and Millennials making up a large share of today’s wedding market, pros can genuinely cater to their wishes by offering sustainable choices. Clearly communicating these choices gives you yet another opportunity to stand out, connect with modern couples and build a business with longevity.