--Here's the Top 10:

1.)  Taylor Swift, $57 million . . . She's 22.

2.)  Justin Bieber, $55 million . . . He's 18.

3.)  Rihanna, $53 million . . . She's 24.

4.)  Lady Gaga, $52 million . . . She's 26.

5.)  Katy Perry, $45 million . . . She's 27.

6.)  Adele, $35 million . . . She's 24.

7.)  Kristen Stewart, $34.5 million . . . She's 22.

8.)  Lil Wayne, $27 million . . . He's 29.

9.)  Taylor Lautner, $26.5 million . . . He's 20.

10.)  Robert Pattinson, $26.5 million . . . He's 26.