Hi Tam. New York does not have a Nordstrom. There are two that are accessible outside the city by train: one in Westchester, NY and one in Short Hills, NJ (in that swanky mall I posted about). If there is one in SF, that would probably be easier to get to. You will not find Nordies in Canada.
Visit Bloomies in NY, and if you are open to another dept. store, Lord and Taylor. What about Urban Outfitters? There are like 6 of them in NY. I can definitely see you in that store. Oooh and Uniqlo for great basics.
Also, if you go down 5th avenue from around 23rd street going south, you will find countless shops like Zara, Esprit, Arden B, Guess, Banana Republic, J Crew, Anthropologie, Bebe, H&M, Lucky, and lots, lots more.