For a Facebook noob, Katrina Kaif is doing fabulously well. The actress who made her social media debut on Sunday (July 17) is winning new friends and impressing old ones ever since she landed on the site. She started her Facebook journey with an interesting conversation with ex-boyfriend Salman Khan. The Sultan star wished Katrina on her birthday. “Katrina Kaif welcome to Facebook and wishing you a very Happy Birthday,” he wrote. Soon, the actress replied to Salman, “Thank You Sultan.” The other Khan who wished Katrina on her Facebook debut was her co-star from Jab Tak Hain Jaan, Shah Rukh Khan. Katrina also posted birthday wishes for Priyanka Chopra. The Quantico star's reply was pretty well awesome: "Thank you very much babe and a very happy belated birthday to u too. And finally welcome to the mad world of social."