Sometimes it's easy to assume that all famous people know each other. But until Saturday's (July 5) Back to the Beginning blow-out final show honoring Ozzy Osbourne and Black Sabbath, the Prince of Darkness had never met Guns N' Roses singer Axl Ros e. Despite both men being hard rock royalty, their paths had somehow never crossed.

Ozzy Osbourne shared a photo of him meeting Guns N' Roses' Axl Rose for the very first time. The legendary rockers performed at Black Sabbath's final concert on Saturday, July 5.

The concert, dubbed "Back to the Beginning," took place at Villa Park in Birmingham, England and marked not only Sabbath's last-ever performance, but Ozzy Osbourne 's as well. Guns N' Roses were among the many bands invited to perform during the event, in addition to Metallica, Slayer, Alice In Chains, Tool and others.