Thank you all for your input. I googled the ones Suz mentioned (it's been a very long time since I last drove in TO!) and Google maps tells me that Sherway Gardens is 10 minutes from the airport and Square One 15-20. Ha. Ha. Ha. Agreed that Yorkdale is unnecessarily in the other direction; I couldn't ever do all of it in a day, and that was 2 expansions ago...
Is Sherway better? Why? I have warm fuzzy feelings for it because I spent my very first paycheque as an adult on an outfit there...
Looking at the malls online to see what stores they have: both have Jacob and Ann Taylor, which are not available here, as well as BCBGMaxAzria, Michael Kors, and Melanie Lyne, which I'm pretty sure are too high-end for what is essentially going to be impulse shopping. (My wardrobe is black, white, grey, and navy, so anything I find will fit in easily, but I don't need anything.) Square One has WHBM (I'm intrigued by the concept) and Loft; Sherway has Forever 21 (MDAL?), Talbot's, and The Bay, which was usually a letdown when I did have access to one.
Also, which of these stores would I be sized out of? (F21, I'm looking at you) As a tall IT tending toward apple, I need the largest sizes (14 to 18 depending on vanity!) but Plus or W sizes are too wide. Maybe Talbot's is calling my name...
And last note, chiefly a question for Sveta I think: are there any shoe shops that I shouldn't miss checking out (as an 11W)?