Karthi and his wife Ranjani were blessed with a baby boy on Tuesday.
The actor took to Twitter to share the good news, and described it as a ‘life-changing’ experience.
He wrote, "Dear friends and family, we are blessed with a boy baby. We can’t thank enough our doctors and nurses who took us through this life changing experience. Need all your blessings for the little one. Thank you god(sic)!"
Karthi and Ranjani already have a daughter, Umayal.