How 2 get skinny like Victoria Justice?

I know just how you feel! Im really skinny, but i have huge calve legs :( i do DDR all the time, and i walk alot. in 8th grade i did track. that kept me skinny, but for some reason, the only problem i hate with my body is my legs! they're so big! :( but my friends always told me that i should be happy for my body. so my advice would be that you should be happy for the body you have now(: victoria was just born like that. we're all born differently.