Belmont Wheelworks! just don't dare go there for a fit without cycling shorts (I have seen people show up without shorts)
I work next to Cycleloft. They seem like a nice bunch of people, but I am Belmont-loyal. Anyway - the selection of women's clothing at Cycleloft is dreadful. You will have much more fun at belmont. Just avoid it on the weekends when there is nice weather.