New Delhi, Oct. 27 -- Actor Karthi on Tuesday penned a heartfelt birthday message for his father, veteran Tamil cinema star Sivakumar, praising his discipline, integrity, kindness and dignified way of life as an example to follow.

Sharing the tribute on social media, Karthi wrote, "Happy birthday Appa! Your discipline, integrity, kindness, knowledge and the dignity with which you lead your life is a golden standard, in every sense."

The post featured a vintage black-and-white family photograph of Sivakumar smiling, with his wife, Lakshmi, and toddler-aged Karthi holding balloons during a celebration.

The birthday tribute highlighted the close family ties in the Sivakumar household, with both Karthi and his elder brother, actor Suriya, ...