The album coincided with other high-profile projects in which she was involved in other media. "Metamorphosis" received mixed reviews from music critics; some complimented it for being a modern-day bubblegum album, while others considered the album to be a promotional gimmick for Duff, lacking real substance. The album debuted at number two on the US "Billboard" 200, selling 203,000 copies in its first week, becoming the highest opening week sales figure for a debut album by a female artist in 2003. In the following week, the album rose to number one on the chart. It became the eighth best-selling album of 2003 in the US, according to Nielsen SoundScan, selling 2.6 million copies in a period of five months. By late 2005, the album had sold five million copies worldwide. For Hollywood Records, "Metamorphosis" was the label's first high-seller in several years and led to the company's further successful cultivation of new artists and brands using the Disney Channel.