Sure, Kim Kardashian may have walked down the aisle twice before, but that doesn't mean she isn't stoked to do it again. Case in point: ever since Kanye West put a 15-Carat rock on her finger, she's been wearing all white ensembles all over the place. (We've gotta give props to Kimmy, since we just called white as this season's hottest red carpet trend.) Check out the proof below. The constant worrying about spilling Diet Coke on couture must be exhausting…