The singer explained that when she tours America, her fans think she is posh like the British monarch and that she has to insist that she is actually "common".
Adele told The Sun: "American people think I am posh even though I am really not. They think I have a very British accent, as in: 'Do you know the Queen?'
"I just laugh at them. In England I am thought of as common as muck."
She added: "I'd like to know a couple of the royals, though. I'd love a night out with Prince Harry, he seems like a right laugh. I love Kate Middleton, she's brilliant. And I love William."
Adele also confessed that she used to ignore offers on MySpace from record labels when she was younger as she thought they were "internet pervs".
Her friend uploaded tracks to the social networking site as she didn't understand or have any interest in it and had to convince Adele that the offers were genuine.
She joked: "He kept saying to me between 2004 and 2006: 'I think you've got an email from someone at Sony.' But I kept saying, 'Oh, it's probably just an internet perv' so he didn't reply.
"Then the day after I finished college, when I was 18, he gave me the website password and said: 'You should go on this now. I don't think they are internet pervs, I think they are serious.'
"I went on there and had all of these emails from record companies. Then three days later I was in the offices of XL Recordings, who ended up signing me."
Adele recently claimed that smoking is not to blame for her current throat problems and that the real issue is her excessive talking.
> Adele's '21' album on course to sell 13 million copies by Christmas
Watch the music video for Adele's 'Someone Like You' below: