Place to get mens dress shoes in Toronto

Hey all, I have a wedding to attend in 3 weeks, and I was wondering if anyone knew where I could find a place or several that had dress shoes or normal shoes that could pass for dress shoes when needed...

I am cursed with high arches and wide feet (requiring me to find something with alot of height in the toe of the shoe so I cant just go and buy any old shoe... I normally would use Mark's since I can sometimes get work shoes and normal shoes there.

I am in Scarborough.