How to become petite?

I weigh 210 lbs,5ft6 and I'm 14 years old. My measurements are 38d-33-44. How can I become a lot smaller very easily. I just keep getting bigger and bigger without eating a lot.
Updates
+1 y
By petite I meant like small and thin like. Very feminine
Updates
+1 y
I exercise hard everyday by the way. My sis is yella skinny and so is my mum
How to become petite?
Post Opinion