Celebrity endorsements and branding can significantly increase sales. Signing a celebrity endorsement can cause the value of stocks to rise and increase sales by about 4 percent, according to Social Media Week. Social media has been a major factor recently in driving product sales. That is in large part because social media can provide curated glimpses into the daily lives of celebrities. Nike is a great example of using celebrity endorsements to boost sales. The 1984 Nike Air Jordan campaign was one of the most successful celebrity endorsements in history. 25 years later in 2009, the Nike Jordan brand dominated 75 percent of basketball shoe sales and 10.8 percent of overall shoe sales in the United States.
