1/6: Actress Munmun Dutta who plays Babita on the show took to her Instagram and shared a glimpse of how she celebrated the big day on TMKOC's sets. / Image: munmundatta/instagram

2/6: Sunayana Fozdar who plays Anjali Tarak Mehta on the show also shared a carousel where she was seen posing alongside Palak Sindhwani and Ambika Ranjankar. / Image: Instagram/sunayanaf

3/6: Have a look at the cake that the team of 15 years cut earlier today and marked the milestone of 4000 episodes - a record in itself for Indian television. / Image: Instagram/sunayanaf

4/6: Meet the cast and crew of Taarak Mehta Ka Ooltah Chashmah who were present on the sets to witness this major milestone unfold in the show's history. / Image: Instagram/taarakmehtakaooltahchashmahnfp

5/6: Palak Sindhwani who plays Sonalika Bhide on the show also took to her Instagram stories and shared a picture with TMKOC's lead protagonist Dilip Joshi who portrays the character of Jethalal Gada. / Image: Instagram/palaksindhwani

6/6: This selfie straight from the sets featured the leading ladies of TMKOC featuring the actors who play Babita, Roshan, Anjali, Hathi, Roshan, Sonu and Bawri. / Image: Instagram/sunayanaf