"What an incredible honour," Adele said in a press release. "A huge, huge thank you to my American fans for embracing this record on such a massive level."
No kidding. And they're not the only ones; all told, the singer's moved more than 25 million copies worldwide. She's also become the first European artist to earn a diamond record in less than two years, and 21 is the first album, period, to eclipse the 10 million mark that quickly since the year 2000.