Though they don't focus entirely on yarn, there's a fair bit of crochet and knit in the archives over at The Fashion Police, which is where I found this very. . . unique dress fashioned after a hamburger. (Well, technically, I guess it's a cheeseburger. . .)
The same designer behind the cheeseburger dress, Joy Kampia O'Shell, has also created other unusual food-themed items for wear, including this donut necklace:
Crocheted junk food to wear? Who am I to judge?
(Especially since I may or may not sell food-themed jewelry online. . .)