The Hidden Environmental Impact of Events That No One Talks About - Fashi

When people ask us about the biggest environmental impacts of events, they usually expect the same answers: travel, energy, waste. And yes, those are usually the big hitters when it comes to an event’s impact. But recently, a client asked us what the hidden or often unnoticed impacts were, the ones that slip under the radar. One answer sprang to mind: fashion. 

While we spend months designing low‑impact production, optimising transport, and reducing waste streams, thousands of guests are quietly making one of the most carbon‑intensive decisions of the entire event lifecycle before they even arrive: what to wear. 

The industry is beginning to talk about it, but progress is slow. One of my favourite examples this year came from an event we supported with INCA Productions. Gwyneth Paltrow arrived wearing the same look she wore to the Shakespeare in Love premiere in 1998. It was a moment that made headlines not just because it was glamorous, but because it was sustainable. It showed millions of people that rewearing isn’t just acceptable, it’s iconic. 

At the NAT Gala another event we supported, sustainable fashion was woven into the narrative from the start. The event encouraged guests to rethink the culture of single‑use outfits, spotlighting designers and attendees who embraced rental, vintage, and re‑styled pieces. It was proof that when events set the tone, people follow. 

These moments may seem small, but they matter. They shift norms and they give people permission to show up differently. 

Understanding this, a client recently asked us, “If we theme our event as sequins and sparkles, are we encouraging unsustainable fashion?” 

It was an honest, important question, and one that more event teams should be asking. 

A dress codes or themes can unintentionally push guests toward fast fashion, last‑minute purchases, or single‑use outfits, but they don’t have to. With the right pre‑event communication, you can keep the fun and reduce the impact. 

Imagine pairing that theme with messaging like: 

• “Go bold, but go borrowed, rented, or re‑worn.” 

• “Check your local charity/vintage shops for sequins with a story.” 

• “Share your outfit’s past life on social media, we love a rewear moment.” 

Fashion is an area where people often don’t realise the environmental footprint, or that they have low‑impact options available to them. That’s why, as event professionals, pre‑event communication is one of the most powerful tools we have. 

A simple message in the event briefing can educate guests on the impact of fashion, normalise renting, borrowing, and rewearing and reduce last‑minute fast‑fashion purchases. Done in the correct way, it can even spark conversations that extend beyond the event. 

As Event Sustainability Consultants, we spend a lot of time thinking about the operational footprint of events. But the cultural footprint is also important. Events shape trends and influence behaviour at scale. If we can make sustainable fashion feel exciting, glamorous, and normal within the event world, that influence ripples far beyond a single night. 

That’s where the real change happens. 

Written by Eve Morrison, Event Sustainability Consultant at Worlds Better