Question: what is a 6x size?
Answer: Size 6X is basically a true size that lies in between size 6 and size 7. It is an inch bigger than size 6 and an inch smaller than size 7. And it is about 2-inch longer in length than size 6. Kids, especially girls, experience a growth spurt from age 6. ... The chest measures 26 while the waist measures 23 inches.