The Fashion Police alum took to her Instagram Stories to share a sweet throwback moment from Ozzy & Jack's World Detour, the A&E reality series featuring Ozzy and her brother Jack Osbourne.

Ozzy Osbourne, who died on July 22 at age 76, will be honored by his family with a funeral befitting the star’s infectious spirit, a source tells PEOPLE in this week’s cover story.

Decades after his rise to heavy metal fame, the self-styled Prince of Darkness, his wife Sharon and their two then-teenage children Kelly and Jack starred in MTV's The Osbournes, pioneering what the show's producers describe as a "reality sitcom".

Kelly Osbourne is mourning the loss of her father Ozzy following his death on Tuesday. Osbourne posted a brief message to her Instagram stories on Thursday afternoon. “I feel unhappy I am so sad,” she wrote. “I lost the best friend I ever had.”

It is with more sadness than mere words can convey that we have to report that our beloved Ozzy Osbourne has passed away this morning,” the statement reads. “He was with hi

They were just totally in love and devoted to each other, and that wasn’t for the cameras. That was just who they were.”

Tributes are pouring in from music legends and celebrities after Ozzy Osbourne, the rock and heavy metal icon turned reality show star, has died at the age of 76, according to his family.