The American movie star's partner passed away on July 12 at the age of 57, after a secret battle with breast cancer.
The Grease actor and 20-year-old could be seen moving to classical music in an empty bar in the heartwarming footage.John captioned the clip: "My daughter @ella.travolta and I dancing in memory of momma. One of Kelly’s favourite things, dancing with me." "I will be taking some time to be there for my children who have lost their mother, so forgive me in advance if you don’t hear from us for a while. But please know that I will feel your outpouring of love in the weeks and months ahead as we heal. All my love, JT."
She was later remembered at a private funeral and cremated at the Brooksville Crematory in Brooksville, Florida.
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