This is more of a question for the ladies.?

what is ur height and weight? i dont think that im overweight, and my BMI is normal, but im just curious to see if anyone is like me. i am 5ft and i weigh 61kg/134lbs.. but i dont get it, some of my gfs are a little shorter and weigh over 10 kgs less than me... im just really curious as to how us women can look almost the same yet be so different. thx :)