What does the fox say? To Halloween costume stores, it says money!

According to TMZ, sales of fox costumes are through the roof! Costume shops have seen a big increase in the sale of fox costumes. What does this mean? Well, we're all pointing fingers at Ylvis and their viral hit "The Fox."

The website said it spoke to Amazon, Spirit Halloween and Buycostumes, and all three agreed fox costume sales were way up over Halloween 2012. One even revealed sales were up by 40 percent!

Watch Ylvis' 'The Fox'