Kelly Osbourne is honoring her mother, Sharon Osbourne, with a touching tribute as she marks the first wedding anniversary since the death of legendary rocker Ozzy Osbourne.

The Black Sabbath frontman passed away in July last year at the age of 76 . His death occurred just two weeks after a final farewell concert in his hometown of Birmingham. The heavy metal icon had been battling a string of health issues, including a public struggle with Parkinson’s disease .

On what would have been the couple's 46th wedding anniversary, Kelly, 41, visited her father's grave on the family's sprawling 250-acre estate in Buckinghamshire. She laid a large bouquet of flowers at the site where Ozzy is buried near a lake . The daughter of the "Prince of Darkness" took to Instagram to share a heartfelt open letter to her mother, detailing the profound grief the family continues to carry .

"Today feels different. A day that was once filled with celebration now carries a quiet ache," Kelly wrote. "This is your first wedding anniversary without Daddy by your side, and I can only imagine how heavy your heart must feel. There are some dates that remind us just how deeply we have loved, and today is one of them" .

In the poignant message, Kelly reassured Sharon that the love she shared with Ozzy transcends physical loss. "I hope you know that love like yours doesn't end when a life does. It changes shape. It becomes the warmth of the sun on your face when you need comfort," she wrote . "Daddy may no longer walk beside you, but he will never stop walking with you" .

Kelly also praised her mother's strength over the past year. She noted that Ozzy would be proud of the "resilient, compassionate, courageous, and endlessly loving" woman Sharon has become amid her grief . The tribute concluded with a promise of support for the future, acknowledging the difficult milestones that Sharon now faces without her husband .

The emotional tribute comes as the Osbourne family navigates a period of profound change. Reports have indicated that Kelly's personal life has also faced challenges, with her engagement to Slipknot DJ Sid Wilson reportedly ending in March . Meanwhile, Sharon recently had to cancel a public appearance due to an unexpected hospital visit, forcing her to miss the unveiling of a 20-foot statue of Ozzy at France's Hellfest festival .

Sharon and Ozzy were married in Maui, Hawaii, on July 4, 1982 . They built one of rock music's most enduring and iconic partnerships, raising three children and navigating decades of fame together.