Madonna

The best-selling female recording artist of all time, Madonna has sold over 300 million records worldwide and holds the record for the highest-grossing concert tour by a solo artist (the Sticky and Sweet Tour, 2008-2009, grossing $408 million). She won 7 Grammy Awards and has placed 38 songs in the US Top 10 — more than any other solo artist in history. Time magazine named her one of the 25 Most Powerful Women of the 20th Century.