Today it's between Japanese singers Ayumi Hamasaki and GACKT. Ayumi Hamasaki is one of Japan's most popular singers and has been named the "Empress of Pop". She launched her career in 1998 with the single Poker Face and went on to release her first album on record company Avex, A Song for xx in 1999. (In 1995 she brought out a mini-album Nothing from Nothing on the record company Nippon Columbia, which failed to chart). Since then Ayumi (Ayu to her fans) has released 50 singles and 14 studio albums, 8 of which have topped the Oricon charts.She is ranked by Oricon as the 3rd best selling Japanese artist of all time, behind rock duo B'z and pop rock band Mr. Children . She is also popular throughout Asia. As well as being a singer, Ayumi has her own fashion brand MLTRG (Material Girl), a cartoon version of herself called Ayupan, has hosted a talk show Ayuready? (from 2002-2004) and also opened a restaurant called Rainbow House. She is considered a fashion...