Shoppers Inside A Kmart Store Ahead Of Black Friday Sales [Getty Images]

A customer, left, hands over U.S. twenty dollar bills as she pays for her purchases at the checkout inside a Kmart discount store, operated Sears Holdings Corp., ahead of Black Friday in Frankfort, Kentucky, U.S., on Thursday, Nov. 27, 2014. An estimated 140 million U.S. shoppers are expected to hit stores and the Web this weekend in search of discounts, kicking off what retailers predict will be the best holiday season in three years. Photographer: Luke Sharrett/Bloomberg via Getty Images

Bloomberg Bloomberg