Kelly Osbourne has addressed the death of her father, Ozzy Osbourne, at age 76. Taking to her Instagram Stories on Thursday — just two days after saying goodbye to her dad — the host, 40, wrote, “I feel unhappy I am so sad. I lost the best friend I ever had .”

Days after Osbourne’s death, Kelly shared a clip from his three-season reality series, Jack and Ozzy’s World Detour, to her Instagram Story. “One of the best Ozzy moments ever!” she wrote above the video. In the footage, Kelly is seen driving her motorhome with Osbourne riding in the passenger seat.

Kelly Osbourne shares touching moment with her father in which they can be seen singing and dancing together, as she continues to mourn his death.