Clothing and butch/boyish girls?

I've kinda started to like dressing a little bit boyish, not completely man-like, but I like shirts and vests and I prefer my hair short, almost boy-like. I like clothes Shane from The L Word wears (and she's so hot! :D). I'd like to buy some more boyish clothes, but they don't have much of a choice on women's section, and I feel a bit uneasy about walking into men's section and getting weird looks. Where do butch girls usually buy their clothing?