John Travolta gushed that he "adores" his youngest son Benjamin in a heartfelt birthday tribute.
The 67-year-old Hollywood legend gave his followers a rare glimpse of his boy on his 11th birthday.
Alongside a snap of Benjamin and his daughter Ella, 21, sitting with their father, he wrote on Instagram: "Happy birthday my beautiful boy. Your dad adores you."
Ella also posted many happy returns to her little brother.
She wrote: "Happy birthday Benjamin! The sweetest boy I know. You continue to teach me so much and brighten our lives. I love you."
Benjamin was born a year and a half after the family lost 16-year-old Jett Travolta in 2009.
Their mother is the late Kelly Preston, who died aged 57 in July 2020 from cancer.
The 'Saturday Night Fever' star has largely kept his youngest kid out of the spotlight.
However, on Halloween, he posted another Instagram of his son, writing: "Happy Halloween everybody. What was your favourite candy bar growing up?"
John also shared the sweet moment when Benjamin adopted a cat, writing on the photo of the two of them: "Ben's new cat Crystal."