North American men's wedding fashion ideas?

You can find also find a lot of common men's wear brands across both countries in department stores. What you find here at The Bay the guys can find at a Lord and Taylor in the US. Common brands that you'll find across the border are Calvin Klein, Kenneth Cole, Soul of London, Black Brown 1826, DKNY, Tommy Hilfger etc.

If you want to shop store specific instead of by brand both Canada and the States will have J Crew, Zara, Banana Republic, or Brooks Brothers if you really wanna go fancy.

Moores in Canada is owned by Men's Warehouse in the US so their offerings is pretty much the same thing (Black by Vera Wang, Promo Uomo, Joseph Aboud etc).