Kelly Osbourne's son, Sidney, is following in his late grandfather Ozzy Osbourne's footsteps this Halloween season. The 2-year-old paid homage to the Prince of Darkness on Friday, October 31, by recreating Ozzy's infamous stunt where he bit off the head of a bat during a 1980s concert. Sidney, however, used a toy bat to get into the spooky spirit. Kelly, 41, posted a clip of Sidney wearing a skeleton top and leggings set and red cowboy boots on Friday while holding his gray bat toy.