@ehBeth,
Likewise, you can buy shoes in USA with EU sizing, particularly recreational shoes...cycling skiing, etc. This is especially true of those shoes from Italy. For example most of the cycling shoes are in EU sizing - even Japanese shoes are EU sized.
So, likewise in Canada, shoes from others countries are currently available and sold with EU and other region's foreign sizing.
Designer fashion shoes, such as Gina, Jimmy Choo, Christian Louboutin and Gucci, are mainly French and Italian and use european sizing
Here's a link to Wiki article on history of shoe sizing:
http://www.internationalshoesizes.com/us-shoe-sizes.htm
"The sizing system in England is one size different than the American system in width as well as length. The English system starts at 0 and the American system starts at 1. The American shoe sizing system is used to produce shoes for the U.S and Puerto Rico, parts of Asia and Africa, the Caribbean Islands
and sometimes for Canada."
http://en.wikipedia.org/wiki/Shoe_size