Sharon Osbourne has struggled to sleep alone since her husband Ozzy Osbourne died

The trio recorded the episode sitting around a large wooden table covered in magazines featuring the Black Sabbath frontman, and Sharon admitted:

"I hate going to bed at night."

Kelly said: "I mean, I slept with you for the first two months so that you weren't on your own. But then I felt like you needed some space.

"I wake up and for the first three seconds I feel normal. And then I remember everything. Mornings are the hardest for me.

"What is the morning? Because it happened in the morning. And I used to spend most of my time with Dad in the morning."

The 41-year-old star admitted she didn't realise just how "horrible" it would feel to lose her beloved dad, who had been in poor health for years before his death from a heart attack.

She tearfully said: "I never realised just how horrible grief is. I never knew I was capable of loving somebody so much and missing somebody so much. I just, I never thought there'd be a day where he wouldn't be here."

Sharon asked: "But then how blessed are you to have had a dad like him?"

Kelly noted her dad would "hate" to see her crying and admitted she has taken comfort from her three-year-old son Sidney, who she has with rocker fiance Sid Wilson.

She said: "I'm just so grateful that Sidney got to meet him. And that they had such a special little relationship.

"If it wasn't for my baby boy..."

Father-of-four Jack agreed: "Having the kids has been a huge help."

The 40-year-old TV personality has found some positives in his grief.

He explained: "It is both horrible and beautiful in the way that it forces you to unpack and examine things. Like, yeah, it sucks that he's gone, but also, for me, it has led to a huge amount of gratitude and love and like really cherishing moments that at the time you take for granted."

The public outpouring of grief for the Paranoid hitmaker has been "so helpful" to his family, but Sharon admitted she doesn't think Ozzy would have realised how much he meant to people.

Kelly said: "The outpouring of love has been so helpful to us. I never could have even imagined it to be as helpful as it has been to know that we're not alone in our grief, in our sadness and that the rest of the world loved him as much as we did...

"I haven't seen an outpouring like that since Princess Diana died. I didn't expect it."

Sharon added: "Ozzy, he wouldn't believe it. He wouldn't. He didn't realise how much he was loved and that was his beauty because he never took it for granted from anyone. He never took it for granted I'm this, I'm that. He had no idea."