#1. Taylor Swift , 22
May 2011 to May 2012 Earnings: $57 million

#2. Justin Bieber, 18
May 2011 to May 2012 Earnings: $55 million

#3. Rihanna, 24
May 2011 to May 2012 Earnings: $53 million

#4. Lady Gaga, 26
May 2011 to May 2012 Earnings: $52 million

#5. Katy Perry, 27
May 2011 to May 2012 Earnings: $45 million

#6. Adele, 24
May 2011 to May 2012 Earnings: $35 million

#7. Kristen Stewart, 22
May 2011 to May 2012 Earnings: $34.5 million

#8. Lil Wayne, 29
May 2011 to May 2012 Earnings: $27 million

#9 = Taylor Lautner, 20
May 2011 to May 2012 Earnings: $26.5 million

#9 = Robert Pattinson, 26
May 2011 to May 2012 Earnings: $26.5 million