The couple lost their baby, according to the actor's blog post which appeared on Wednesday.
Aamir's blog reads: 'I have bad news folks. Kiran and I lost our baby. Despite our best efforts we were unable to avert a miscarriage. The last 2 months have been a struggle for us and that is one of the reasons I was absent from the blog in more ways than one. K and I need time to heal. I will be away for a while. Love.'
The couple tied the knot in 2005. Kiran was admitted to the Breach Candy hospital in south Mumbai for fever in June. During a medical test, it was discovered that she was three months pregnant.