The Queen is a big Wham! fan who pleaded for the chance to meet the band, their manager revealed.
In his memoirs, only recently published after his death in 2008, Bryan Morrison told how Her Majesty met George Michael and Andrew Ridgeley at a polo match in June 1985.
Morrison said: "Through an emissary, I learnt that the Queen had heard that I was managing and publishing Wham! and that she would like to meet them."
The singers were invited to the Guards Polo Club in Windsor, where they spent some time with the monarch.
Morrison added: "To my amazement, on greeting them, the Queen knew all of their hits and spent a great deal of time listening to their exploits.
"It was at a drinks thing in a marquee after some polo match. There were lots of other people there, but she did speak to me. She asked me about China, and said that she hadn't been there but that she might be going there next year.
"She was really very sweet. And small."