LONDON, Feb. 1 (UPI) -- Kate Middleton, Duchess of Cambridge, will sit for an interview for the first time in more than five years. But she won't be talking about herself.
Though the world might love to hear about her family life and how her husband and two children, Prince George and Princess Charlotte, are getting long, the Duchess will instead be discussing and celebrating the life and reign of her mother-in-law, Queen Elizabeth II.
The interview will become part of a documentary about the queen, who will turn 90 in April.
Queen Elizabeth is the world's oldest reigning monarch and in 2015 surpassed her great-great-grandmother, Queen Victoria, to become Britain's longest-reigning head of state.
According to People magazine, the film is set to air in May in the United Kingdom on ITV and will feature exclusive commentary from the Duchess as well as other members of the royal family, including Prince Charles and Camilla, Duchess of Cornwall, and Prince William.
"We've been fortunate to have the participation of so many members of the royal family to mark this historic milestone in the life of the Queen," said Nick Kent, executive producer of Oxford Film and Television, in a statement this week. "It's a remarkable story of an extraordinary life, which in so many ways reflects the changing face of the nation."
The working title of the film is The Queen at Ninety.