Gillian Anderson Reveals the Real Reason Behind Her Iconic 2001 Thong Dress
Gillian Anderson has finally explained the practical reason behind one of her most memorable red-carpet looks. The actress recently revisited the revealing navy dress she wore to the 2001 Vanity Fair Oscars afterparty, revealing that the visible thong was not originally intended as a fashion statement.
While speaking with Elle alongside her Teenage Sex and Death at Camp Miasma co-star Hannah Einbinder, Anderson explained that the dress was made from jersey fabric and had an extremely low back. That design made traditional underwear difficult to wear.
Instead, Anderson chose a thong as a practical solution. More than two decades later, that last-minute decision remains one of the most recognisable fashion moments of her career.
Gillian Anderson Says the Thong Was a Practical Solution
Anderson’s explanation gives the famous outfit a very different backstory.
The actress said the navy Eduardo Lucero dress dropped so low at the back that regular underwear was not a realistic option. Because the fabric was jersey, she also wanted to avoid body hair being visible through the material.
So, rather than deliberately trying to create a provocative fashion moment, Anderson opted for a thong.
Einbinder joked that the decision had “changed the world”, prompting Anderson to agree while laughing. She also said she was pleased that the look eventually became such a memorable part of fashion history.
The 2001 Dress Became a Defining Y2K Fashion Moment
Anderson wore the long-sleeved navy dress to the Vanity Fair Oscars afterparty in 2001. The dramatically low back exposed the thong underneath, while sunglasses and other accessories completed the look.
At the time, Anderson was already internationally recognised for playing FBI Special Agent Dana Scully on The X-Files. Her red-carpet appearance offered a very different visual from the more restrained image associated with her famous television character.
Fashion publications have since included the outfit among Anderson’s most notable looks from the 1990s and early 2000s. i-D, for example, has described the exposed-thong appearance as one of her standout Y2K fashion moments.
Why Gillian Anderson’s Thong Look Still Gets Attention
The outfit became especially relevant again as exposed underwear returned to fashion conversations.
In 2019, Anderson drew a connection between her 2001 appearance and Hailey Bieber’s pink Alexander Wang Met Gala dress, which also featured a visible thong-style detail. British Vogue reported that Anderson described Bieber’s look as another example of “necessity” inspiring fashion.
The comparison shows how the idea of deliberately visible underwear evolved from a surprising red-carpet detail into a recurring fashion trend.
Fashion coverage has also linked visible thongs with the broader Y2K revival. Designers and celebrities have repeatedly revisited low-rise silhouettes and exposed underwear, helping bring the aesthetic back into mainstream style discussions.
Anderson Has Continued to Take Risks on the Red Carpet
The 2001 dress is not the only Gillian Anderson outfit to generate attention.
At the 2024 Golden Globes, she wore a custom Gabriela Hearst gown decorated with embroidered anatomical motifs. The unusual design quickly became another memorable entry in her red-carpet history.
Anderson later highlighted the 2001 dress among several notable fashion moments from her career, showing that she now embraces the look rather than treating it as an awkward piece of her past.
That attitude is part of what makes the old outfit interesting today. What began as a wardrobe problem eventually became a fashion reference point.
Gillian Anderson Is Also Promoting a New Film
Anderson’s latest comments came while she was discussing Teenage Sex and Death at Camp Miasma, her new film with Hannah Einbinder.
Directed by Jane Schoenbrun, the movie was selected for the 2026 Cannes Film Festival’s Un Certain Regard section. Cannes lists Anderson and Einbinder among the film’s lead cast and describes the story as a new chapter in the fictional Camp Miasma slasher franchise.
The film premiered at Cannes in May 2026. Its unusual mix of horror, identity, desire and dark humour has also attracted attention from critics.
The timing gives Anderson another opportunity to reflect on a career that has repeatedly moved between conventional and unconventional roles.
A Wardrobe Fix Became Fashion History
Anderson’s explanation changes the way the 2001 photograph can be viewed.
The look may now seem like a carefully planned example of early-2000s celebrity fashion. However, Anderson’s own account suggests that the starting point was much simpler: she needed underwear that worked with an unusually low-backed dress.
That practical decision happened to create an image that lasted far beyond the event itself.
More than 25 years later, the dress remains part of conversations about Y2K fashion, exposed underwear and celebrity style. Anderson’s latest comments add an unexpected detail to that history and show that some of the most memorable fashion moments are not always planned as carefully as they appear.