Mariah Carey made history.
Mariah Carey . In 1998 , she was honored as the world 's best-selling recording artist of the 1990s at the World Music Awards and subsequently named the best-selling female artist of the millennium in 2000 . The album became the best-selling album in the US and the second best-seller worldwide in 2005 and produced `` We Belong Together , '' which became her most successful single of the 2000s , and was later named `` Song of the Decade '' by Billboard . Throughout her career , Carey has sold more than 200 million records worldwide , making her one of the best-selling music artists of all time . According to the RIAA , she is the third-best-selling female artist in the United States , with 63.5 million certified albums . With the release of `` Touch My Body '' ( 2008 ) , Carey gained her 18th number-one single in the United States , more than any other solo artist .