Yeah for you!!
I have a pair of size 10 Gap jeans that I have been taking pictures of myself in since about December. The first picture has them down around my knees. (I have on a bathing suit in the pic)
Now, I can zip them!! They're not pretty, but they're on my rear, zipped and buttoned. I can't wait too look good in them, as you do.
I'm just now beginning to be on the muscular side of things, I think. Prior to really kicking up the exercise, I was one of the women saying "But I'm the same height/weight, why don't I fit into that size?" Ladies, I think there really is something to be said for exercise and body size and the scale does not at all tell the story. I weigh 182 pounds and at 5'4" am wearing a size 12. I think that's positively crazy.