1 / 8Actor Saif Ali Khan turns 50 years old on Sunday. As he hits the half century of life, we are bringing you his most adorable pictures with wife Kareena and son Taimur.2 / 8Saif Ali Khan and Kareena Kapoor Khan recently created a huge buzz by announcing that they are expecting a second child.3 / 8Many celebrities took to social media and congratulated the couple on the good news. Soha Ali Khan took to Instagram and shared a post teasing Saif who is going to become father again.4 / 8Having worked with Karisma Kapoor in the past, Saif Ali Khan was no stranger to sister Kareena Kapoor. In fact, the actor first met Kareena when she was just a young girl on Karisma's set. The stars first worked together in LOC Kargil (2003) and the multiple award-winning Omkara (2006), before coming together once again to shoot the action comedy movie Tashan (2008)5 / 8It was on the sets of this film that the actors are said to have fallen in love. “I unabashedly wore my heart on my sleeve and it was a nice ride till I finally met Saif and we fell in love,” Kareena once said in an interview.6 / 8Just a year into their relationship, Saif decided to get inked to mark his love for Kareena. “We were in the car one afternoon in Bandra, talking about David Beckham. I don't know why I brought him up,” Saif revealed to a news channel in 2009. “And then the tattoo came up, and I said, ‘Maybe I should get one on my shoulder, would it look cool?' And [Kareena] said, ‘Why shoulder? Put it on your arm.' I thought, ‘Maybe a nice K?' and she said, ‘That's a bit ambiguous.'” 7 / 8Despite constantly being in the spotlight, Kareena and Saif kept their wedding very private. After living together for five years, the couple sealed the deal with a week-long celebration including a sangeet at Kareena's Bandra home. The duo tied the knot on October 16, 2012.8 / 8After months of giving her fans major maternity style inspiration, Kareena Kapoor Khan welcomed their first baby, Taimur Ali Khan Pataudi on December 20, 2016. Within hours of the big moment, pictures of Saif Ali Khan giving his wife a kiss at the Breach Candy Hospital in Mumbai took over the internet, and little Taimur Ali Khan Pataudi became a viral sensation on his first day in the world.