Miley Cyrus who is also known as Hannah Montana, has earned over 18.2 million last year. Miley is a very talented young lady who has a huge fan base due to her show on the Disney Channel "Hannah Montana" and from her music as well. There are a lot of girls all over the world who idolize her and all of those fans help contribute to her salary. If this 15 yr. old Us Power Girl keeps this up, she may might be able to retire by the time she’s 20 yrs. old.