Britain's Catherine, Duchess of Cambridge
Britain's Catherine, Duchess of Cambridge attends the Anna Freud Centre Family School Christmas Party at Anna Freud Centre, in London, December 15, 2015. REUTERS/Chris Jackson/Pool/

Kate Middleton has already recorded her first television interview ever since she got engaged to Prince William in November 2010. The interview was shot as part of a documentary to mark the life of Queen Elizabeth II, who turns 90 on April 21. The documentary will be released later this year.

The documentary titled “Queen At Ninety” (working title) will have short interviews by many other royals including Kate Middleton, the Duchess of Cambridge Prince William, Prince Charles and his wife Camilla, the Duchess of Cornwall. The two-hour long documentary film on the life and reign of Elizabeth has been shot by ITV. It will be hosted by none other than British TV presenters Ant & Dec.

The last time Kate was seen in front of the camera was in November 2010, when she got engaged to William. The royal couple then did a joint interview announcing their engagement to the world via Sky News. However, this time around, Kate has gone solo for the interview.

The 90th birthday of the British monarch will be celebrated all over the country in June. There will be huge celebrations – street party at the Mall in London including a Patron’s Lunch which will witness a guest list of 10,000 people. People all over the country have been encouraged to host their own local celebrations to honor the queen.

A special thanksgiving church service will be held at St Paul’s Cathedral. This year will mark an epoch making year for Elizabeth. She will pass on most of her duties to the younger members of the royal family, before her birthday in April. Kate will reportedly take over the role of sports patron of the All England Lawn Tennis and Croquet Club, after the queen’s 64 years on the British throne.

Prince Harry, 31, will be given the role of patron of the Rugby Football Union.