700 Lady Diana artefacts come together in a landmark California exhibition from November 2026
A black sheep jumper, a floral dress that sold for over half a million dollars, a legendary dance at the White House: the Lady Diana exhibition opening in California in November 2026 brings together everything that made the princess a global icon. More than 700 original objects will be united in a single venue for the first time, offering the public a rare and intimate glimpse into the life of a woman who became a legend.
700 pieces to tell every chapter of Diana’s life
The event will be held at the Ronald Reagan Presidential Library in Simi Valley, California, running from 7 November 2026 to 31 May 2027. Visitors will be able to explore objects spanning Diana’s entire journey: her early years as a Spencer, her role as Princess of Wales, her humanitarian work, and her life as a mother.
This Lady Diana exhibition is the result of a partnership between the Ronald Reagan Presidential Foundation and Institute and the collection of Renae Plant, founder of the Princess Diana Museum. Plant has assembled one of the largest private collections in the world dedicated to the princess. Her aim in joining forces with the institution is to make this heritage accessible to the general public.
The pieces on display range from iconic dresses to handwritten letters, jewellery, and childhood mementos. Each one tells a fragment of an extraordinary life, and some are now so deeply embedded in popular culture that a single glance is enough to place them.
The “Caring Dress” and the black sheep jumper: symbols worth $520,000
Among the most anticipated pieces in this Lady Diana exhibition is the “Caring Dress”, a floral gown the princess wore during visits to sick children in São Paulo, Australia, and Seville. Renae Plant acquired it at auction in 2025 for $520,000, the equivalent of more than 445,000 euros. That price alone speaks to the symbolic value the world continues to place on Diana’s personal belongings.
Another standout piece is the iconic red jumper featuring a black sheep. Originally worn at a polo match, the garment has become one of the most recognisable symbols of the princess’s style and has since taken on a life of its own as a global cultural phenomenon, far beyond a simple fashion keepsake.
- The black Victor Edelstein gown, worn during a dance with John Travolta at the White House in 1985
- The “Caring Dress”, a floral gown worn during visits to sick children in São Paulo, Australia, and Seville
- The red black sheep jumper, now a worldwide cultural phenomenon
- Handwritten letters and personal jewellery belonging to the princess
- Objects connected to her childhood as a Spencer
A dance with Travolta set alongside Nancy Reagan’s legacy
One of the most mythologised moments of Diana’s public life will take centre stage at the exhibition. The black Victor Edelstein gown, worn during a dance with John Travolta at the White House in 1985, will be displayed alongside mementos connected to Nancy Reagan. The pairing is deliberate: both women share a similar trajectory, one in which celebrity was channelled into humanitarian causes.
This curatorial choice gives the Lady Diana exhibition an added dimension. Rather than simply celebrating a fashion icon, it shows how Diana used her visibility to champion real causes, much as Nancy Reagan had done in her own way.
Nearly 29 years on, Diana remains a living icon
31 August 2026 will mark 29 years since the death of Lady Diana. Yet interest in her life and personal belongings shows no sign of fading. On the contrary, pieces such as the “Caring Dress” are fetching record prices at auction, and exhibitions of this scale continue to draw international audiences.
This Lady Diana exhibition in Simi Valley is a reminder that certain public figures transcend their era. Diana’s clothes, letters, and personal objects are no longer mere royal relics: they have become witnesses to a life of commitment, an inimitable sense of style, and a presence that continues to resonate, nearly three decades after her death.
