Not to be the total rain on your parade person... but, depending on your frame size, you may need to adjust your size goal. I'm a tad under 5'9" (5'8.5" baby!) but I was wearing size 8s in my 130s and up to about 145 depending on the brand. I have a relatively mediumish frame when it comes to my wrists, neck, ribcage (at 135 im a 30D/DD), etc. I could button and "wear" size 6s at 112 (not an intentional weight at all) but they didn't look so hot. As much as I love the sound of saying size 6, it probably will never be in the cards for me.
However, with that said, most people guessed I was a size 6 when I was a size ten, so, regardless of what the tag number says, your height will, to a certain extent, help you look like a smaller size.
Fighting back from the regain
Strong is the new skinny.