Source: http://www.inc.com/ilan-mochari/ugly-swe...

Thirteen months ago, Michael Lewis, founder and CEO of Forever Collectibles, didn't even know that ugly sweaters were a thing. A concept. A fun, dorky theme for holiday parties. 

But last Christmas, he noticed that his predominantly young staff (average age: 25) were wearing them to the office. Frequently. And passionately. One of the young staffers suggested that the company--which makes sports-related baubles, officially licensed by all the major college and pro sports associations--should start selling sports-themed ugly sweaters.

One year later, the suggestion has come to life, to the tune of $10 million in ugly sweater sales.