If I've been the same size for over 2 years, will I ever grow?!

I don't mean height, I mean like in body shape, if you know what I mean? I'm a girl, 15 years old and 5'10". Although I've grown heightwise since then, I've worn the same size in clothes since I was 12-13(with the exception of instead of 7's, I wear 7-longs in jeans). I have a sortof boy-ish figure, not much shape. Do you think I will always have a sortof boyish frame or will I fill out?? No one in my family has a body type like me..My mom's side are all short and stocky and my dad's side is very athletic and thick.