Justin Bieber performs his 'My World Tour' concert in Mexico City

Fans of Canadian pop singer Justin Bieber lie on the pavement in the shape of a heart outside his hotel in Mexico City October 2, 2011. Bieber is performing two concerts in Mexico City as part of his "My World Tour." [Photo/Agencies]

Fans of Canadian pop singer Justin Bieber scream outside his hotel in Mexico City October 2, 2011. Bieber is performing two concerts in Mexico City as part of his "My World Tour." [Photo/Agencies]