Proud father Shah Rukh Khan thinks that his kids are growing up to be very cool and he will have to make efforts to keep up to them.
The 49-year-old actor took to Twitter to share a picture of his 18-year-old son Aryan and 15-year-old daughter Suhana at the airport via a fan club.
He captioned the picture, "Sorry but can't refrain from saying I think they r turning out lean mean and very cool. I need to keep up."
Shah Rukh will be next seen in Rohit Shetty's directorial 'Dilwale' that is slated to release on December 18.
