size 12 or 14
NO
i am an eight year old boy and i only wear pants to school.
Should wear 7/8 or meduim
A 12-year old girl should wear a size 12/14. If the girl is tall, she may want to go up a size so things will fit better.
You should wear a sagging, poopy diaper that can be seen by everyone (don't wear anything but the diaper) oh yeah. all males ( boys ) should wear bra along with it!
an 13 year foot size should be around an 8 or 9There is no size which your feet 'should be' at any age, generally taller boys have larger size feet, so if you are taller than most of the other boys when you are 13 your feet are likely to be larger too.
Not all teenage boys cross dress. But, curiosity is the usual reason.
Girls 10/12
It depends my kid is in a 10, but my friends kid is in a 5, both are 4
A 7 year old boy might wear a size 1 shoe, or he might wear a size 13. Some 7 year old boys with very large feet might even wear a size 2 or 3 shoe.
an 11