I love shoes, and I'm a size 11, so it makes it bit harder to find cute ones sometimes. I wear mostly heels or sneakers, since flats make my feet look really really long. I love pumps with a peep or rounded toe. I dont really do strappy sandals, my feet just look so exposed and huge to me. I love espadrilles with colorful ribbons, even though they are clunky. My philosophy is I want people to look at my feet, and rather than saying "wow your feet are big" they say "cute shoes."
Shoe shopping spots for big feet girls:
I buy a lot of my shoes online -- banana republic, ann taylor, ninewest all carry 11's online but not in store. If they dont fit or i dont like them, I just return them at the store. Net-a-porter.com and bluefly.com carry 11's from major designers. I've done well with outlet shopping, just have to hunt around for 11's (I found two awesome pairs of Prada heels at an outlet store once).
Whenever I'm in a major department store, they never have the 11's listed as a size available in the shoe, but sometimes they actually have it if i ask. Some department stores (Macy's, Lazarus) have let me go back into the stock room and a salesgirl helps me go through all the 11's in stock, since it's easier than me asking about the availability of every shoe.
And my old reliable standby, payless carries size 11, and has cheap, cute shoes sometimes.