Rocker Ozzy turned 65 yesterday (3 December) and Kelly paid tribute to him with the snap, adding that she is "proud" to be his daughter.
The picture shows Kelly as a tiny blonde-haired tot and Ozzy - who has quite an impressive head of hair - is cuddling her tight.
It appears the heart-warming shot was taken in the kitchen at home and Kelly is snuggled in a white blanket.
Sharing the photograph with her fans on Instagram, Kelly said: "Today is my Dadda's birthday!
"Happy birthday Dad, I am so proud to be your daughter! I love you sooooo much!!!!!" Aww!
Ozzy has three children with his wife, X Factor judge Sharon - Kelly, Jack and their elder sister Aimee, who likes to shy away from the limelight.
For his birthday, he has kindly asked friends, family and fans to donate to The Royal Marsden cancer hospital in London.
The charity is close to Ozzy's heart, as wife Sharon has beaten several battles with cancer in the past.
Are you a fan of the Osbournes? Tell us below, as the best comment from across the website each week wins £50!