Duke and Duchess of Sussex lead birthday messages to the Queen as she turns 93

Hatty Collier

The Duke and Duchess of Sussex have led the Royal Family's birthday messages to the Queen as she turns 93.

In a post on their Instagram account, Meghan and Harry, who are expecting their first child any day now, said: "Happy Birthday Your Majesty, Ma'am, Granny. Wishing you the most wonderful day! Harry & Meghan".

The Kensington Palace Twitter account, which represents Kate and William, tweeted: "Wishing a very happy 93rd birthday to Her Majesty The Queen! #HappyBirthdayYourMajesty."

This year, the monarch, who is Head of the Church of England, sees her birthday coincide with Easter Sunday, the most important day in the Christian calendar.

Celebrating her 93rd birthday: The Queen (Getty Images)

Elizabeth II, who has a strong faith, usually celebrates Easter at Windsor Castle by joining members of her family at a service in St George's Chapel.

At Buckingham Palace, the Band of the Irish Guards will perform a rendition of Happy Birthday in her honour on the forecourt as part of the Changing of the Guard ceremony.

The Queen's great grandchild, Prince Louis, the son of Kate and William, will celebrate his first birthday on Tuesday and Meghan and Harry's first child is due any day now.

Meghan, Harry and the Queen during the RAF flypast in July 2018 (Getty Images)

April 21 - the day the Queen was born - is the first of the monarch's two birthdays.

She also has an official one on the second Saturday in June each year, which is commemorated with the Trooping the Colour parade.

The Queen and Princess Eugenie at the Royal Maundy Service at St George's Chapel last Thursday (Getty Images)

Gun salutes are also fired as a mark of respect to the Queen on her special day - but never on a Sunday, so this year they will be delayed by one day.

On Monday, the King's Troop Royal Horse Artillery will ride their horses and gun carriages past Buckingham Palace en route to Hyde Park to stage a 41 Gun Royal Salute at noon.

Prince Louis will turn one on Tuesday (AFP/Getty Images)

A 62-gun salute will also be performed by the Honourable Artillery Company at the Tower of London at 1pm the same day.

The Queen traditionally spends a month-long residence at Windsor Castle, known as Easter Court, each year.

Princess Elizabeth Alexandra Mary was born at 2.40am on April 21 1926, the first child of the then Duke and Duchess of York, at 17 Bruton Street, the Mayfair home of her mother's parents, the Earl and Countess of Strathmore.

Meghan and Harry are expecting their first child to be born any day now (PA)

She was never expected to be Queen when she was born, but the abdication of her uncle Edward VIII in 1936 put her father George VI on the throne, and changed her destiny.

Elizabeth II, who has been monarch for more than 67 years, is Head of State, the Armed Forces and the Commonwealth, and has been married to the Duke of Edinburgh for more than 71 years.

She became Britain's longest-reigning monarch, passing her great-great grandmother Queen Victoria's record, in September 2015.

With the death of 88-year-old King Bhumibol Adulyadej of Thailand in 2016, the Queen now holds the record for the world's longest reigning living monarch.