RockyFest kicks off with surprise statue of underdog boxer in Philadelphia

Sylvester Stallone loans second cast for first-ever festival honoring franchise, including bus tour and mural unveiling

The city of Philadelphia is hosting its first RockyFest" in honor of the film franchise starring Sylvester Stallone as the boxing protagonist - and included an event-opening surprise at the top of the so-called Rocky Steps.

The festival, which began on the franchise's 48th anniversary on 3 December and runs through 8 December, includes a bus tour, mural unveiling and movie marathon.