Mark Zuckerberg – Facebook founder Mark Zuckerberg wears a hoodie during a keynote address at a 2010 conference in San Francisco. Protesters nationwide are wearing hoodies in support of Trayvon Martin, 17, who was wearing one when he was shot dead while walking in a gated community in Sanford, Florida.
Justin Bieber – Justin Bieber wears a hoodie during a 2010 performance in Atlanta.
Lindsay Lohan – Actress Lindsay Lohan arrives at Los Angeles International Airport in a hoodie in August 2009.
Snoop Dogg – Snoop Dogg performs in a hoodie at New York's Madison Square Garden in November 2004.
Muhammad Ali – Boxing legend Muhammad Ali greets the crowd in a hoodie before unveiling a new wallscape for Adidas in Harlem.
Unabomber – Authorities auctioned Unabomber Ted Kaczynski's personal items in May 2011, including his signature hoodie. The proceeds were used to compensate some of his victims.
Sylvester Stallone – Sylvester Stallone wears a hoodie in a still from the 1976 film "Rocky."