I am 12 yrs old going on 13 in November. I weight 140. I am 5'2. My pants size is 6-7. I am very mature, physically and metally. People always think im 15 or 16 because how I look. I want to drop down to a size 3-4. I wa to lose weight on my thighs and butt.How can i do this? I dont eat alot. I always play sports and stuff. Does having bra size C affect weight? Can anyone help me?

I have some typos in there...LOL ...SORRY!