The 'Fashion Police' co-host, who recently split from fiance Matthew Mosshart, attended the Clive Davis and The Recording Academy's pre-Grammy gala with her rocker father on January 25, reported Contactmusic.
"There will never be any man in this world that I love more than my dad!," she posted on Twitter.
Kelly, 29, also posted a picture of her looking very happy with the Black Sabbath singer, 65, on Instagram, with the caption, "My Dadda is the best person on earth to go to Hollywood parties with all we do is laugh because we can't take anything seriously!"
"It was a mutual decision. We love each other very much, it just wasn't the right time for us, and I think that if we're weren't as mature and as adult as we are then we could have gone down a road that got not very nice. We're still really really good friends, we're just not living in the same house.