BiG doesn't carry Edwin. You can try Atrium in SoHo, NY ( but they haven't carried the Blue Trip series, as far as I 've seen on my visits... worth a shot, though)
You can also try contacting Blake in Portland, OR. Last summer he had some of the Win RV series. Jasmine Sola in Boston had some of the Win RV series as well.
I used to be a big fan of these... but I decided to move onto harder-core denim after I had trouble getting a hold of them