Late to this thread and no buying suggestions, but I just wanted to say CONGRATS!
Congratulations! If you have a day to shop in Toronto I highly recommend the store Want on Avenue Road. They have a huge selection of cocktail dresses and gowns and are very very helpul. Here is the website, though it does not really do the store justice. http://www.want.ca/ Good luck!

Congratulations, Suz!
I'm afraid I'm no help with Canadian shopping, but I can't wait to see what you decide to wear!

Jyoti, that is so sweet - thank you! I will let you know. And Neelie, thank you for the suggestion and the link. And thanks to everyone else, too! What a great group.

Suz,
Congratulations! What an honor! You mentioned that you could order from J Crew. They have some beautiful dresses in their wedding collection that could easily fit the bill. I'm partial to the navy silk chiffon. I just checked and they have long and short dresses in navy. My daughter had her bride's maids wear J Crew dresses and all of them said that they either wore the dresses or plan to wear them again. They are very "unbride's maidish" if you know what I mean!

Congratulations! That is fantastic!
I'm not sure what to wear but I wanted to say Congrats!!!!!