British sensation Leona Lewis has become the fourth best-selling artist worldwide in 2008, thanks to the extraordinary success of her debut album, the R.I.A.A. platinum-certified Spirit, which has sold more than four and a half million copies worldwide. In addition, Spirit has sold more than 1.17 million copies in the U.S according to Nielsen SoundScan, making 23-year-old Lewis the seventh bestselling artist in the country so far in 2008.