129 is the "ideal" for my height, which is 4'11". I have not been even close to that since before I had my daughter at 18. I was a size 10 when I was 21 and I was very happy with that. When I was younger and a 0-4, I was much too small. You could see every rib in my body. And I didn't try to be like that, I was just naturally was that tiny.
But after I had Hannah, my hips got wider, my bust got larger and I developed a bit of a belly that just wont go away. And I am ok with that...as long as I can fit in my 10's