India, Oct. 7 -- Actor Kareena Kapoor Khan (45) took to Instagram to share a picture expressing her admiration for her husband, actor Saif Ali Khan (55). In the photo, Saif is casually dressed in a white kurta-pyjama, sporting his signature sunglasses and holding a guitar. Along with the image, Kareena wrote, "The coolest ever. Baki please ghar jao aur khanna khao." The picture appears to have been taken on the set of Saif's upcoming film Haiwaan, which marks the long-awaited reunion of Saif and actor Akshay Kumar on the big screen after more than 17 years. The duo last shared screen space in the action-drama Tashan in 2007....