The baby boy was born through IVF to a surrogate mother.
Despite taking different paths, Aamir Khan and his first wife Reena have remained cordial with each other.
Even Aamir's son Junaid was present at the birthday celebrations.
Aamir's daughter Ira was seen carrying cake for the birthday celebrations.
Aamir and Kiran had kept the news of becoming parents under the wraps.
There is no bad blood between Aamir and his first wife Reena. The entire family came together to shower their blessings on Azad Rao Khan.
Birthday boy Azad Rao Khan at his birthday celebrations.
There have been speculations that Junaid might follow in his father's footsteps and soon join Bollywood.
Aamir Khan and Kiran Rao recently celebrated the first birthday of their son Azad Rao Khan.
Aamir Khan's first wife Reena was seen with her daughter Ira at Azad Rao Khan's first birthday.