Memo to cosmetics counters: If last night's Costello Tagliapietra show is any indication, you will soon sell out of your spring colors. We know because a little NARS bag with eyeshadow samples was left on every seat, though well before the show we noticed a few poorly behaved crashers - and we'll add poorly dressed, though fine, that's mean - swiping each makeup bag as their own. We dismissed the behavior as limited to Fashion Week kleptos - you know, those people who scoot from show to show and carry ten goody bags with them? But it turns out, no. We witnessed fashion editors discretely sweeping the NARS palettes into their bags. The girl behind us stole ours when we got up to greet a friend. And to our left, Molly Sims quietly slipped her own goody bag into her larger purse - We wonder if she's finally exhausted her Cover Girl supply?