‘Happy birthday to my incredible wife, Jennifer,’ the Rocky star, 77, captioned the post.

The Rambo star often shares photos of his wife and daughters Sophia, 26, Sistine, 25, and Scarlet, 21, on his Instagram.

Happy birthday: Sylvester Stallone threw some love his wife’s way as Jennifer Flavin turned 55 on Monday

Fans and friends offered their good wishes to Mrs. Stallone in the comments including singer Richard Marx, 59, who commented with two heart emojis.

Sly and Flavin met in 1988 and dated until 1994 when he ‘cheated’ on her with model Janice Dickinson.

He believed the child Dickinson was carrying was his but a DNA test proved the child was not his.

Flavin and Sly got back together in 1995 and married in May 1997.

In 2022, the couple stunned fans when they announced they were divorcing after 25 years of marriage. She filed for divorce in August 2022.

The Creed star issued a statement several days later saying: ‘I love my family. We are amicably and privately addressing these personal issues.’

Then, exactly a month later, the couple delivered another surprise – they’d called off their divorce.

‘There was a reawakening of what was more valuable than anything, which is my love for my family,’ the Expendables star told The Sunday Times. ‘It takes precedence over my work, and that was a hard lesson to learn.’

Long time loves: ‘Happy birthday to my incredible wife, Jennifer!!!,’ the Rocky star, 77, captioned the post

Lovely couple: The Rambo star often shares photos of his wife and daughters Sophia, 26, Sistine, 25, and Scarlet, 21, on his Instagram

Famous friend: Fans and friends offered their good wishes to Mrs. Stallone in the comments including singer Richard Marx, 59, who commented with two heart emojis

Stallone revealed that earlier in his career, he tended to place work ahead of his children, saying, ‘I didn’t pay enough attention when they were growing up.’

He added: ‘I was so career-oriented and now I go, “OK, I don’t have that much runway up ahead and I want to start asking them about their lives.”

‘I ask them about their day and they started at first a little monosyllabic. Then I heard one say, “I was just thinking about you.”

‘Oh my God. I’ve never heard that before in my life. When a daughter knows you care, she’s there forever.’