Cassio Brandao, a Brazilian Google employee, has set a Guinness World Record for owning the world's largest collection of soccer shirts, amassing 6,101 shirts since 2000. His collection includes rare Pele jerseys, a 1998 World Cup shirt signed by Ronaldo, and notable items like Pele's jersey when he met Queen Elizabeth. Brandao founded a collectors' club in Sao Paulo, showcasing shirts worth up to 40,000 reais and emphasizing the historical and sentimental value each piece holds.