United Kingdom, Aug. 19 -- Kelly Osbourne has paid tribute to son Sidney in a heartfelt Instagram post, thanking him for "giving purpose" to her life.

The 41-year-old shares the three-year-old with ex Sid Wilson, and has previously said that the tot has helped her tremendously following the death of her father, Black Sabbath star Ozzy, in June 2025.

She took to the social media site to post a series of cute snaps with her little boy, as she wrote: "There are loves you experience in life, and then there is the love you have for your child. A love so deep it becomes part of your bones.

"My son, loving you has been the greatest privilege of my life. I love you in the quiet moments, in the laughter that made our stomachs hurt, in the kisse...