The funeral took place at St. George's Chapel at Windsor, with a spokesman for the Palace describing the ceremonial arrangements as "a reflection of the duke's military affiliations and personal elements of His Royal Highness' life."
The dress code for the funeral spurred a lot of attention. While the women were told to wear day-dress attire, the Queen called for absolutely no military outfits, according to reports.
"It's the most eloquent solution to the problem," a military source dished, noting that the Queen suggested all senior male royals simply wear suits and ties.
"This is obviously very sensitive," Fitzwilliams stated. "Anything that distinguished the brothers in that way, which would be so obvious for anyone watching, would probably be avoided. The whole thing we do not want is any form of rift."
Face masks, however, were required for everyone in attendance.
Scroll down through the gallery below to see what the royals wore to Prince Philip's funeral.
As she watched her beloved husband of 73 years laid to rest, the Queen wore a black Peter Pan-collar coat with a single row of centered buttons, styled with black gloves, a three-strand pearl necklace, pearl matching earrings and signature hat. She also wore her diamond Richmond brooch from her grandmother Queen Mary's collection. The Queen regularly wore the sparkling piece during her early reign for formal engagements with her husband. She has also worn it to military remembrance events in the past.
Prince William & Prince Harry
Forgoing military uniforms as instructed, the estranged brothers both wore black suit jackets adorned with medals and striped trousers.
Always one to make a fashion statement, the Duchess of Cambridge wore an elegant black Catherine Walker coat dress featuring a bow at the neckline, over a Roland Mouret dress and topped a Philip Treacy velvet pillbox hat with net veil. Honoring her husband's grandfather, she chose to wear special items from Her Majesty's personal collection of jewels. The Japanese Pearl choker necklace was worn by Kate for the Queen and Prince Philip's 70th wedding anniversary dinner at Windsor Castle in 2017, and by her late mother-in-law Princess Diana in 1982. The Bahrain Pearl Diamond Drop Earrings were also worn by Diana in 1982.
Camilla Parker Bowles
The Duchess of Cornwall wore a black long-line coat, covering a black dress, tights and high heels. She also showed off a striking asymmetrical statement hat, pearl earrings, a bugle brooch and a black and gold printed face mask.
On the lapel of his black suit (similar to the one worn by his sons), the Prince of Wales wore a collection of medals including: a garter star, an Order of Merit, the Queen's Service Order (New Zealand), Coronation Medal, Silver Jubilee Medal, Golden Jubilee Medal, Diamond Jubilee Medal, Naval Long Service Good Conduct (LSGC), Canadian Forces Decoration, The New Zealand Commemorative Medal and the New Zealand Armed Forces Award.
The 32-year-old daughter of Prince Andrew wore a classic black coat with gold button detailing and belted at the waist, adding a pair of simple pointed-toe pumps, box clutch and box hat with bow detailing over her ponytail.
Beatrice's sister wore an ultra chic black military-style coat styled with studded pumps, accordion handbag and an elegant hairband with a net detail.