If you will be in Vancouver proper... you might want to check out
www.theclothshop.com they have just moved recently. A shop I enjoy and it's not far from the airport is
www.quiltedbear.net and if you come a little further east you will find
www.wineberryfabrics.com or
www.fabricana.com or
www.agreatnotion.com and a little shop only a short ferry ride away
www.carola.ca