58% of Guests Say Dress Codes Are More Specific Than Ever; Nearly 1 in 3 Are Unsure What to Wear.
87% of Wedding Guests Admit to Buying Single-Use Outfits; 68% of Those Items Remain Unworn in Closets.
OAKLAND, Calif. – May 12, 2026 – ThredUp (Nasdaq: TDUP, LTSE: TDUP), one of the largest online resale platforms for apparel, shoes, and accessories, today announced the release of its Dress Code Decoder, a shopping experience designed to dismantle the rising "one-wear" wedding economy. New data from ThredUp reveals that modern wedding culture has transformed guest dressing into a high-pressure, multi-outfit cycle fueled by hyper-specific dress codes and social media expectations. To combat this trend toward disposable fashion, the Dress Code Decoder helps guests easily translate complex invitation requirements into curated, shoppable secondhand looks, offering a more sustainable and affordable way to dress for every event.
“As wedding dress codes become more niche, guests are facing a significant time and effort gap in finding the right attire. Nearly a third of guests tell us they simply aren't sure what to wear," said Cynthia Lee, Head of Merchandising at ThredUp. "We see an opportunity to remove that friction. The Dress Code Decoder is a shortcut designed to address some of that confusion, allowing guests to spend less time searching and more time focusing on the event itself.”
With ThredUp’s Dress Code Decoder, guests can input moodboards inspired by the dress code from their invite, whether it’s “Amalfi chic,” “old Hollywood glamour,” or “colorful cocktail,” and the tool translates it into a curated edit of shoppable secondhand looks from ThredUp’s inventory.
Inside the One-Wear Wedding Economy: Key Consumer Insights from ThredUp
Wedding Guest Dressing Has Become a Part-Time Job
More than half of guests (58%) say dress codes have become more niche compared to five years ago, making the process of finding an outfit feel more like labor than leisure.
63% of guests believe outfit recommendations based on specific dress codes would simplify the decision-making process.
Gen Z leads the demand for help: 77% want AI-driven or curated recommendations, compared to 69% of Millennials and 53% of Gen X.
Nearly 1 in 3 guests lack the confidence to accurately interpret modern wedding dress codes.
62% of guests spend 3+ hours searching for a single outfit, while 1 in 7 spend a full workday (8+ hours) on one look.
The hidden cost: For a multi-event weekend, the search time ranges from 6 hours (a cross-country flight) to 24 hours (an entire solar day).
Social Media Pressure Fuels a "One-Wear" Wedding Economy
The report highlights a shift toward a "one-wear" culture, where the social media-driven pressure to avoid repeating outfits has made single-use purchases the standard for younger generations.
87% of guests have purchased at least one outfit they only wore once; 37% have done so 4+ times.
78% of guests required 2+ distinct looks for a single wedding celebration, while nearly half (47%) required 3+ outfits.
More than 1 in 3 guests admit social media increases the pressure to never repeat an outfit.
56% of Gen Z feels pressured by social media to wear different outfits, compared to 40% of Millennials and 29% of Gen X.
Most Wedding Guest Outfits Never Get a Second Life
Despite the frequency of one-time purchases, most wedding guest outfits remain unused in closets instead of being recirculated through resale.
The average guest spends $550–$820+ on once-worn outfits over time, yet only 36% eventually resell them.
68% of once-worn pieces remain sitting in closets—a massive pool of high-quality occasion wear with untapped resale value.
Gen Z Retains the Most: 81% of Gen Z guests keep one-wear outfits in their closets, vs. 72% of Millennials and 59% of Gen X.
The Hidden Cost of Wedding Season
While many guests try to stay budget-conscious, the rise of multi-event wedding weekends is multiplying wardrobe needs and increasing financial pressure.
33% of guests cite the total cost of attendance as their primary stressor, outweighing travel logistics or social dynamics.
42% have reduced everyday spending on dining and entertainment to afford wedding attire.
22% of guests—and nearly 1 in 3 Gen Z attendees—have tapped into savings to fund their wedding guest wardrobe.
To decode your next wedding dress code, visit the link here. To shop for your next wedding event, check out ThredUp’s Dress The Part(y) edit here.
Wedding Economy Data Methodology
ThredUp’s findings are based on a nationwide survey of 1,443 U.S. adults who attended a wedding within the last 18 months. Conducted in April 2026, the study analyzed consumer attitudes toward wedding occasionwear, shifting shopping habits, and the financial impact of current trends. The sample was geographically and demographically representative across age and income. Supplemental data was pulled from ThredUp’s proprietary marketplace, which tracks millions of unique SKUs and real-time shopper interactions to identify emerging resale trends. ThredUp’s analysis found that a "one-wear" wedding outfit costs an average of $137. For the nearly 50% of respondents who anticipate wearing four to six single-use pieces this season, total spend on disposable fashion is projected to reach between $550 and $820+ per person.
About ThredUp
ThredUp is transforming resale with technology and a mission to inspire the world to think secondhand first. By making it easy to buy and sell secondhand, ThredUp has become one of the world’s largest online resale platforms for apparel, shoes and accessories. Sellers enjoy ThredUp because we make it easy to clean out their closets and unlock value for themselves or for the charity of their choice while doing good for the planet. Buyers enjoy shopping value, premium and luxury brands all in one place, at up to 90% off estimated retail price. With ThredUp’s Resale-as-a-Service, some of the world’s leading brands and retailers are leveraging our platform to deliver customizable, scalable resale experiences to their customers. ThredUp has processed over 200 million unique secondhand items from 60,000 brands across 100 categories. By extending the life cycle of clothing, ThredUp is changing the way consumers shop and ushering in a more sustainable future for the fashion industry.