Lady Gaga had earned 95 Million dollars in 2010 between doing 106 concerts and selling CDs. She also launched a perfume.
Katy Perry is the first female who had 3 hit songs that became number one from the same CD. She also launched a perfume.
Taylor Swift had sold more than one million CDs in one week and earned a total of 45 million dollars from selling CDs and doing 47 concerts. Taylor also has done a card deal with a greeting card company.
