Fans of US rapper Pitbull have set a new Guinness World Record for the largest gathering of people wearing bald caps, with 22,141 participants at a concert in London's Hyde Park. Many fans also adopted Pitbull's signature style, including suits, black aviator sunglasses, and fake goatees. Pitbull, the 45-year-old hip hop artist, expressed gratitude to his fans and London for making history, as he was the first to attempt this specific record.