Jack Osbourne's wife, Aree Gearhart, is speaking out following the death of father-in-law Ozzy Osbourne. "I'm pretty sure I have the coolest father in law around, and the best papa to my kids," she wrote via Instagram on Sunday, August 3, sharing a handful of family photos with the late musician. "The world got a rockstar but we got an ice lolly loving, goofy, big hearted guy who made us laugh like no other." Her tribute continued: "He was always in my corner and I forever am thankful to him for raising my husband and blessing me w my family. We got Nana always, Papa.