Diana Ross, Sir Elton John, and Alicia Keys perform for royals at star-studded Platinum Jubilee concert

• The BBC's "Platinum Party at the Palace" took place outside Buckingham Palace on Saturday night.
• Queen Elizabeth II did not attend, but several other royals were among the 22,000 concertgoers.

Global superstars, including Diana Ross, Alicia Keys, and Sir Elton John, performed outside Buckingham Palace on Saturday night to mark Queen Elizabeth II's 70-year reign.

The BBC's "Platinum Party at the Palace" had an audience of 22,000, and many millions more watched the Platinum Jubilee festivities live on TV.

The Queen was not in attendance, but Prince Charles was. Insider reported that he paid a heartfelt tribute to "Your Majesty, mummy" at the concert.

The Duke and Duchess of Cambridge, Princess Charlotte, Prince George, and UK Prime Minister Boris Johnson also watched as musical legends performed.

The concert was kicked off by Queen, fronted by Adam Lambert, who performed three songs.

Later in the concert, a musical medley was led by Lord Andrew Lloyd Webber and Lin Manuel Miranda. It featured songs from "Hamilton," "Cats," and "Joseph and the Amazing Technicolor Dreamcoat."

Sir Rod Stewart performed two songs, followed by Andrea Bocelli's rendition of "Nessun Dorma" and a performance by the British new wave band Duran Duran.

Alica Keys sang some of her greatest hits, including "Empire State of Mind" and "Girl On Fire."

Sir Elton John's performance of "Your Song," which was filmed in Windsor Castle, was broadcast to concertgoers.

And Diana Ross, the 78-year-old Motown icon, who has not performed in the UK in 15 years, closed the concert with three songs.

There were also pre-recorded messages from Sir Paul McCartney, former first lady Michelle Obama, and tennis player Emma Raducanu, among others.