'Merry Christmas' starring Katrina Kaif and Vijay Sethupathi hit the screens today, on January 12. The Sriram Raghavan directorial has opened to positive response from critics and audiences alike. Katrina's husband actor Vicky Kaushal watched 'Merry Christmas' during the special screening that was held recently. Vicky is impressed with the film, especially with Katrina's performance as Maria. He has penned a note where he heaped praise on his wife.