The thing with secret projects is that you only tell everyone what they need to know to get the job done and nothing more. You might also hang a big sign that reads, "Absolutely no photos allowed or we'll sue you for all you're worth." Or, if you're feeling particularly nice, you might demand to screen everyone's captions before they post.
Because she's no novice, Katie Grand must have meant to give the game away when she Instagrammed a Polaroid of Cara Delevingne and Kim Kardashian. While the Love magazine editrix and kind soul who took Kendall under her wing tagged her own publication—indicating that the image will likely appear in an upcoming issue—Mrs. West preferred to leave something to her followers' imaginations. (She wrote "Secret project." And spelled her costar's surname … mysteriously.)
What's this? Kim Kardashian showing discretion for once? We're going to have to lie down.