Guy Sebastian's 2010 single "Who's That Girl" reached number one on the ARIA charts, showcasing his continued popularity in Australian pop and R&B. The song served as the lead single from his fifth studio album, "Armageddon".
- "Who's That Girl" was released on November 5, 2010, by Sony Music Entertainment.
- The song debuted at number 27 on the ARIA Singles Chart and climbed to number one in its fifth week.
- It was Guy Sebastian's third number-one single in Australia.
Guy Sebastian is an Australian singer and songwriter, best known for his contributions to pop and R&B music. He rose to fame after competing in the first season of Australian Idol in 2003.
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