The Queen was captured saying "how incredible" during the Red Arrows flypast over central London today.
The monarch, 96, appeared on the Buckingham Palace balcony to watch the six-minute display of more than 70 aircraft featuring Apache helicopters, Typhoons and The Red Arrows.
Dozens of aircraft from the Royal Navy, the Army and Royal Air Force soared over the royal residence after Trooping the Colour.
A cheer went up when spectators spotted the Queen on screens and she smiled as the Household Cavalry Mounted Regiment passed the gates of Buckingham Palace.
At one point she could be seen interacting with her great-grandson Prince Louis, who was standing next to her on the balcony.
Follow the Queen's Platinum Jubilee celebrations in our live blog here
The nation is embracing the special extended bank holiday weekend of pomp, pageantry and star-studded festivities, which will see celebrities and the public gather in their millions in tribute to the monarch.
Thousands of wellwishers draped in Union flags, party hats and plastic tiaras flocked to central London for the Trooping spectacle.
First to appear in the capital's skies today was the Royal Navy Wildcat, Royal Navy Merlin and British Army Apache helicopters.
The Ministry of Defence said more than 70 aircraft, including aircraft used by the UK Armed Forces on operations around the world, took part.
The display included helicopters from the Royal Navy and the Army and RAF aircraft recently seen responding to events in Kabul and Ukraine and the coronavirus pandemic.
The flypast also featured highlights from the history of the RAF, with Puma and Chinook helicopters flying over the palace followed by the Lancaster, three Spitfires and two Hurricanes, all operated by the RAF's Battle of Britain Memorial Flight.
The Red Arrows made their approach to Buckingham Palace via flying north of Colchester and Chelmsford, Essex, before heading straight down The Mall and over Buckingham Palace.
Army veterans Ronny, 54, Banffy, 59, and Robert, 46, said they had travelled down from Aberdeenshire to celebrate the event.
The group said they won tickets after putting their name in a ballot to sit in the stands by Buckingham Palace.
Pointing to the palace, Ronny said: "A wee wifey that lives in that house, there, and she has had that job for 70 years and she needs a wee bit of celebration, and we highlanders are here to wish her well."
A service of thanksgiving will be held at St Paul's tomorrow, while Epsom Derby Day is on Saturday, and that evening Queen + Adam Lambert and Diana Ross headline the BBC's Party at the Palace.
On the final day, revellers will take to the streets of London for the Jubilee Pageant, that will see each decade of the monarch's reign celebrated with "national treasures" puppets, dancers and music
