She achieved worldwide success with follow-up albums "Music Box" (1993), "Merry Christmas" (1994), and "Daydream" (1995). These albums spawned some of Carey's most successful singles, including "Hero", "Without You", "All I Want for Christmas Is You", "Fantasy", "Always Be My Baby", as well as "One Sweet Day", which topped the US "Billboard" Hot 100 decade-end chart (1990s). After separating from Mottola, Carey adopted a new image and incorporated more elements of hip hop into her music with the release of "Butterfly" (1997). "Billboard" named her the country's most successful artist of the 1990s, while the World Music Awards honored her as the world's best-selling music artist of the 1990s and the best-selling pop female artist of the millennium.