The Queen's Platinum Jubilee will be going out in style at the Party in the Palace concert which will see the likes of Diana Ross, Queen + Adam Lambert, Mabel and Eurovision star Sam Ryder performing.
The live crowd will consist of 22,000 people, including thousands of key workers, and has been put on in front of Buckingham Palace. Millions are expected to be tuning in to see the culmination of her Majesty's celebrations.
Prince Charles, the Duchess of Cornwall, the and Duchess of Cambridge, alongside two of their children, Prince George and Princess Charlotte, Prince Edward and Sophie Wessex, Princess Anne and husband Timothy Laurence, Princess Beatrice and husband Edoardo Mapelli Mozzi, Princess Eugenie and husband Jack Brooksbank, Zara and Mike Tindall, Peter Phillips and his children Savannah and Isla, the Duke and Duchess of Gloucester, the Duke of Kent and Prince Michael and Princess Michael of Kent were all in attendance.
WATCH: The Queen celebrates her Platinum Jubilee
The show started broadcasting on BBC at 7:30pm and kicked off with images of major stars that Her Majesty has met during her 70-year reign, including Frank Sinatra, Jennifer Lopez, Marilyn Monroe and the Beatles.
It was promised that there would be surpises and royal participation and that was shown as although she wasn't in attendance, The Queen put in an appearance alongside Paddington Bear in a hilarious skit, where she revealed she kept a marmalade sandwich in her handbag, before Her Majesty and Paddington tapped out the rhythm to We Will Rock You by Queen.
Although the royal box could only laugh when comedian Lee Mack tried getting them to chant.
The royals all assembled in the royl box for the concert with Sophie spending time with some of the youngsters, with little Isla getting incredibly excited when she spotted herself on screen.
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The royals got into spirit of the event, with George and Charlotte, who were sat in the front row at the royal box, waving Union Jack flags during the set from Queen. Audience members replicated this as Elbow performed. Meanwhile, the Duchess of Cornwall really got into the performance from Six as she was seen singing along.
Following a tribute to to musical theatre, celebrities including Daniel Craig and Michelle Obama paid tribute to Her Majesty, with Michelle issuing an emotional thanks for the support that she was given when she first became First Lady. There was also a message from the Queen saying she didn't "regret" her years of service to the country.
It seems that Kate has a favourite song, as she was singing along flawlessly to George Ezra's Shotgun, not missing a single word. She and Charlotte also waved flags and sung along to Sweet Caroline.
And as the night went on and the temperatures got a bit lower, the royals started wrapping themselves up in blankets in order to keep warm.
After Andrea Bocelli performed, William departed from the royal box to practice a speech that he is due to give at the event. His father, the Prince of Wales, will also give a speech at the end of the concert.
Ahead of a Hans Zimmer performance, there was a video message from Sir David Attenborough who praised the monarchy for the actions that they have taken to protect the environment and biodiversity on the planet. As the theme from Attenborough's series Planet Earth 2 was played, messages from the Queen speaking about the environment were played.
Her message ended with reference to the ongoing work of William and Charles, and she also paid tribute to her late husband, the Duke of Edinburgh, who was noted for his love of nature.
William then gave a speech about environmentalism, in which he made a cheeky comment about his grandmother, noting that she'd been alive for nearly a century.
There was an emotional moment from Sir Elton John, who did not appear in person, but did sing a version of Your Song which was dedicated to the monarch. A sweet moment saw Kate brushing hair out of Charlotte's face as the young royal pointed down to something on the floor.
A message that read: "Thank you Ma'am," was spelled out with drones ahead of the finale, which saw Diana Ross perform.
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