There, from the top of her neck straight down her back, you could see a scar, which was clearly visible in her low-backed Peter Pilotto dress.
While people were quick to note how "brave" Eugenie was for showing her scar at such an event, Eugenie stressed before her wedding that she was merely doing this as a way to stand up for others who may have gone through something similar, and redefine what beauty can look like in the process.
"I had an operation when I was 12 on my back, and you'll see on Friday [at the wedding], but it's a lovely way to honor the people who looked after me and a way of standing up for young people who also go through this," she told ITV's This Morning. "I think you can change the way beauty is, and you can show people your scars and I think it's really special to stand up for that."
"I think you can change the way beauty is, and you can show people your scars."
This summer, Eugenie, the queen's granddaughter, went so far as to share her childhood X-rays of her spine on Instagram as well.
View this post on Instagram
Today is International Scoliosis Awareness Day and I’m very proud to share my X Rays for the very first time. I also want to honour the incredible staff at The Royal National Orthopaedic Hospital who work tirelessly to save lives and make people better. They made me better and I am delighted to be their patron of the Redevelopment Appeal. To hear more of my story visit http://www.rnohcharity.org/the-appeal/princess-eugenie-s-story @the.rnoh.charity #TheRNOHCharity #RedevelopmentAppeal #RNOH #NHS
Already on Twitter, Eugenie's scar is having an effect on the millions of people around the world who have similarly prominent scars themselves.
I didn’t realise I had anything in common with princess #Eugenie , but this is wonderful. I exposed my #scoliosis scar in my wedding dress, but never thought it beautiful - until now. It’s part of me & I’m lucky to be able to tell the tale! Thank you #NHS https://t.co/jYzK4wMkLj— Emma (@EmmaL_D) October 12, 2018
I literally don't give a shit about Princess Eugenie getting married but she's had the same surgery as me to fix her scoliosis & wore a backless wedding dress and it sounds so silly but I think it's so brave & it makes me want to war more backless things despite this horrid scar— ♡ Maddie ♡ (@maddiejaydee) October 12, 2018
Although scars are still commonly seen as imperfections, people like Eugenie and celebrities like Padma Lakshmi proudly putting them on display disrupts that narrative, and shows the world that they're not something that defines you, and certainly not something that you have to hide.