Kate Middleton dazzled at a state banquet honoring Nigerian President Bola Ahmed Tinubu and First Lady Oluremi Tinubu at Windsor Castle on March 18, 2026—a glittering diplomatic evening that showcased the Princess of Wales at her radiant best, more than a year after she completed cancer treatment.
The Princess of Wales, 44, wore Queen Mary’s Lover’s Knot tiara and a flowing emerald green gown by designer Andrew Gn for the formal affair. The green hue paid subtle tribute to Nigeria’s national flag. Prince William accompanied his wife as they supported King Charles and Queen Camilla in welcoming Africa’s most populous nation for its first UK state visit in 37 years.
Kate’s prominent role at the banquet underscored her full return to royal duties following a harrowing 2024. In January of that year, she underwent planned abdominal surgery at The London Clinic in London. Kensington Palace initially stated the procedure was non-cancerous. Two months later, in a video message that stunned the world, Kate revealed that post-operative tests had discovered cancer.
“In January, I underwent major abdominal surgery in London and at the time, it was thought that my condition was non-cancerous,” Kate said in her March 2024 announcement. “However, tests after the operation found cancer had been present.”
The princess underwent preventative chemotherapy throughout much of 2024, making only limited public appearances. She stepped out at Trooping the Colour in June 2024 and again at Wimbledon that summer. By September 2024, she announced she had completed chemotherapy. In January 2025, Kate shared that her cancer was in remission.
The journey back to full royal duties has been gradual but steady. Kate now attends engagements at a measured pace, prioritizing time with Prince George, 12, Princess Charlotte, 10, and Prince Louis, 7. The children attend Lambrook School near the family’s Windsor home.
The Nigerian state banquet represented a crucial moment for UK-Africa relations. President Tinubu and First Lady Oluremi Tinubu arrived for the two-day visit amid strengthening commercial ties between the nations. King Charles had prepared extensively for the visit, attending a London Fashion Week show by British Nigerian designer Tolu Coker and hosting a reception for the Nigerian diaspora in the preceding weeks.
The evening unfolded with characteristic royal pageantry. Earlier in the day, William and Kate greeted the Nigerian delegation at the Fairmont Windsor Park Hotel before escorting them to meet the King and Queen. A ceremonial carriage procession transported the party to Windsor Castle, where more than 1,000 soldiers participated in the diplomatic display.
Kate paired her green Andrew Gn gown with the Queen Mother’s sapphire and diamond earrings from the Royal Collection, along with her blue sash bearing the King Charles Royal Family Order. The Lover’s Knot tiara—a favorite of the late Princess Diana—has become one of Kate’s signature pieces for formal state occasions. She has worn the diadem more than a dozen times since first debuting it in 2015.
The state visit marked the growing responsibility William and Kate shoulder as the King navigates his own health challenges. Charles received a cancer diagnosis in February 2024, shortly after Kate’s surgery. While the King has returned to public duties, the Prince and Princess of Wales have taken increasingly prominent roles at significant national events.
This Nigerian visit followed three major state banquets Kate attended in 2025, including hosting President Trump and First Lady Melania Trump in September. At that event, Kate wore a gold Phillipa Lepley gown with lace overlay. The September 2025 Trump visit was notably the first time a sitting US president received two state visits to the UK.
For Kate, the Nigerian banquet represented another milestone in what she has called her “new normal.” She has spoken candidly about adjusting to life after cancer treatment. During a brewery tour with William earlier in March, Kate revealed she rarely drinks alcohol since her diagnosis. “It’s something I have to be a lot more conscious of now,” she said.
The Princess of Wales has channeled much of her recovery experience into her ongoing charitable work around early childhood development and mental health. Her “Mother Nature” video series, which concluded in January 2026, explored nature’s role in mental wellbeing—a theme deeply personal to her healing journey.
As Kate builds toward an eventual future as Queen, royal watchers note her strengthened public presence. She balances high-profile diplomatic duties with the school runs and sporting events that anchor her children’s lives. The days of powering through packed schedules are over, replaced by carefully chosen engagements with meaningful gaps for family time.
The Nigerian state banquet demonstrated that Kate has emerged from her health crisis not diminished but transformed—a future queen who has weathered a trial that millions face each year, and done so with the grace that has defined her royal tenure.