Kelly Osbourne's 40th birthday will "suck" without her dad Ozzy Osbourne.

The TV personality was left devastated when the Black Sabbath frontman died on July 22 and Kelly has now admitted her heart is "shattered" as she prepared to celebrate her milestone on Monday (27.10.25) without him.

Kelly took to Instagram on Sunday (26.10.25) and shared a sweet photo carousel of her with Ozzy over the years, captioning it with: "Tomorrow is going to be a first for me. The first birthday without my dad.

"Every year the thing I look forwarded to the most was spending the day with him and the cards he would write me. Knowing that I will never get one again shatters my heart.

"Here are just a few of them. They were always short, simple but said everything I needed to hear. I love you Daddy tomorrow will suck without you. (sic)"

The heartfelt upload sparked an outpouring of love from Kelly's fans in the post's comments section.

Ozzy died on July 22, aged 76, following years of health challenges, including a public Parkinson's disease diagnosis in 2019.

According to his death certificate, he passed away from an "acute myocardial infarction" and "out of hospital cardiac arrest".

He is survived by his wife Sharon Osbourne, 73, their children Kelly, Aimee Osbourne, 42, and Jack Osbourne, 39, as well as daughter Jessica Osbourne and sons Louis Osbourne, 50, and Elliot Kingsley, 59, whom he has with ex-wife Thelma Riley.

Kelly previously described her father's death as "the hardest moment" of her life in the aftermath of the tragic news.

In a post on social media at the time, she wrote: "The love, support, and beautiful messages I've received from so many of you have truly helped carry me through the hardest moment of my life.

"Grief is a strange thing, it sneaks up on you in waves - I will not be ok for a while, but knowing my family is not alone in our pain make a difference.

"I'm holding on tight to the love, the light, and the legacy left behind."

His family said in a statement: "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. He was with his family and surrounded by love."