Why Am I So Fat And My Sister So Skinny?

She may have a faster metabolism than you. Just because your siblings, doesnt mean that your bodies work the same. Everyones different. Your body may just store fat easier than hers.
Try doing regular excercise, because the more muscle you have, the harder it is for your body to store fat. Oh, and when you go to eat, think about if your actually hungry (or are you just bored!!)

P.S. I'm not going to tell you that its whats on the inside that counts, coz I no thats just annoying when people say that, even if its true. ;-)

Hey, you are not alone with the skinny sister.  My older sister was not only thin, she was taller than me, and had better skin than me too.  In my school years I used to get called her name at school because the teachers had taught her first, so I got called her name.  I can look back now and laugh at it all, but at the time it was not a moral booster.  BUT I did not let it get me down, even then.  Why should it?

If you really look at your sister, she will have her problems too.  We all do, but sometimes we are so caught up in our own that we do not see that everyone has problems of one kind or another.    Just put yourself in her shoes for a while, and you will see that being her is not all roses either. 

If you were born first you might be the one thats going to be fat. But don't feel bad she going to be fat to

She probably exercises and eats healthier than you do.

You probably don't have a healthier diet than she does.SORRY