Ekta Kapoor celebrates 21 years of Kyunki Saas Bhi Kabhi Bahu Thi with a THROWBACK video; Mouni Roy, Gautami Kapoor and others are all hearts for it

Smriti Irani and Ronit Roy starrer Kyunki Saas Bhi Kabhi Bahu Thi completes 21 years today and on this special occasion producer, Ekta Kapoor shared a throwback video.