Kajol pens adorable birthday message for mother-in-law

Kajol and Ajay tied the knot in 1999. The two met for the first time on the sets of the 1995 film `Hulchul`, and since then have co-starred in many films like `Gundaraj`, `Ishq`, `Dil Kya Kare`, `Raju Chacha`, `Pyaar Toh Hona Hi Tha` and `Tanhaji: The Unsung Warrior` among others