Kelly Osbourne's heart is still heavy after the death of her father, Ozzy Osbourne.

The television personality admitted during the red carpet livestream for the Grammys, where her father was set to receive a tribute, that she is "not doing so great" amid the loss of the Black Sabbath frontman. Osbourne died in July from a heart attack.

"It's the hardest thing I've ever been through in my life," Kelly Osbourne, 41, said of her grief. "But I'm getting through. And we're doing everything we can to try and just live in his legacy and be happy."

Ozzy Osbourne was honored with an ensemble performance of Black Sabbath's "War Pigs" by Post Malone, Guns N' Roses guitarist Slash and bassist Duff McKagan, and Red Hot Chili Peppers drummer Chad Smith. The late frontman's family – including Kelly, wife Sharon Osbourne and son Jack Osbourne – looked on, deeply emotional. The infamous rockstar and reality show star's less forward-facing daughter, Aimee Osbourne, was also in attendance.

During the preshow, Kelly Osbourne said the tribute "means more than I can express into words, to see his peers and this community cherish him in such a way, in a way that he deserves, it'll be very emotional." She added that she was in attendance to support her mother, "Because it's just as much about her as well. He wouldn't have been him without her, and vice versa."