Bollywood superstar Shah Rukh Khan has extended his best wishes to close friend Karan Johar, who has become a father of twins Yash and Roohi Johar through surrogacy. The 51-year-old actor walked the ramp for designer Manish Malhotra at a charity fashion show for NGO Mijwan Welfare Society here on Sunday. On the sidelines, Shah Rukh said: "I wish him health and happiness. I think this is a very personal moment, so don't think I am being cagey and not wanting to answer. "It is very personal because I have had this moment. So let's respect (it) and leave (it at) that. We will have celebrations, love and happiness later."