I want to be thin please read and comment...please =]?

[B-e-a-u-t-i-f-u-l--x]

hey i have a bit of a problem i really want to be thin like thishttp://www.abc.net.au/reslib/200707/r158675_577505.jpg
I just feel fat atm 13 years old 5ft 4 121lbs

I want to not eat anything
But i cant,because of my parents
I feel so trapped
I want to lose 8lbz

any tips?
Whats wrong with me