Trick or treat. What costumes will be at your door

Despite the gloomy news that Americans are shelling out fewer bucks on Halloween paraphernalia (approximately $10 less per person), analysts say we're still spending. Estimates put Halloween at a $437 billion-a-year industry.

And most of the average $56.31 that each of us is pouring into the season is being funneled toward spooky, sexy and silly costumes.

Some will be cute. Others frightful. But celebrities -- or at least their pint-sized alter egos -- are what analysts are forecasting as most likely to land at your doorstep this Saturday. With celebrity-related masks, make-up and mustaches flying off store shelves, neighborhood streets will be transformed into red -- err, orange and black -- carpets this Halloween.