Forbes'release list of 2013 highest earning US celebrities under 30

Forbes released their annual 'list of top-earning celebrities under 30' and Lady Gaga topped the list. Forbes calculated their earnings between June 2012 and June 2013. See the top 10 below... 1. Lady Gaga (age 27) $80 million 2. Justin Bieber (age 19) $58 million 3. Taylor Swift (age 23) $55 million 4. Calvin Harris (age 29) $46 million 5.Rihanna (age 25) $43 million 6. Katy Perry (age 28) $39 million 7. Jennifer Lawrence (age 22) $26 million 8. Adele (age 25) $25 million 9. Kristen Stewart (age 23) $22 million 10.Taylor Lautner (age 21) $22 million