This just in: When the Comme des Garcons for H&M line finally hits New York, you won't be able to stash up in armfuls of every item like in the past. H&M, or somebody, is imposing a two-item per garment limit for every shopper. So, if you really like a certain shirt and want three or more of it (or, if you're secretly running a black market out of your basement), H&M's already on to you. So does this mean fashion black marketers will shop in hoardes, each getting two of everything? We'll see.