Hi Natalie,
are you comfortable posting pictures of some of your outfits that you like, so we can get an even better feel for your style? For now, the consignment stores I like in Seattle are:
Fury (Madison Valley) - hands down the best
Le Frock (Capitol Hill) - trendier, but also smaller
These are alright, but not as great as the first two:
Oh Bella (Ravenna)
Rebekka's (Kirkland)
There are some nice local boutiques in these neighborhoods: Fremont, around Pioneer Square, and in Belltown. I also heard great things about a couple places in West Seattle, but I can't remember the names. I think I wrote them down and will look at home tonite.
I personally live in the south end and go to Andaluz in Columbia City for great earrings and a small but nice collection of clothes.
Also check out http://www.luckymag.com/sites/cityguides/seattle for tips.
Maybe we'll meet you at the Seattle clothing swap in a few weeks (JuliJuli and I are talking about organizing one.)