Who has Officially Claimed the title of World’s Richest Female Musician now, boasting an estimated Net-worth of $1.6 Billion ( £1.2 Billion ) .

The correct answer to the question: "Who has Officially Claimed the title of World’s Richest Female Musician now, boasting an estimated Net-worth of $1.6 Billion ( £1.2 Billion ) ." is "Taylor Swift ".