A Miami rapper, known as Pitbull, has broken a Guinness World Record. The record was set at a concert in London where 22,000 fans wore bald caps.

This achievement is a result of the rapper turning a viral joke into an official title. The details of the event and the record are available from the Miami New Times.

Further information about the concert and the Guinness World Record can be found in the Miami New Times, which reported on the event and Pitbull's achievement.