The wedding took place Monday with only the couple's close friends and family in attendance, said an official announcement from the Aditya-led Yash Raj Films (YRF) banner.
Rani, who has maintained silence on her relationship with Aditya for several years, has now opened up about the "happiest day" of her life.
"I would like to share the happiest day of my life with all my fans all over the world whose love and blessings have been part of my journey all these years. I know that all my well-wishers who have waited for this day will be really happy for me," Rani said in a statement.
Talking about the ceremony, she said: "It was a beautiful wedding in the Italian countryside with just a few of our close family and friends with us. The one person I missed terribly was Yash Uncle, but I know he was there with us in spirit and his love and blessings will always be with Adi and me."
For the 36-year-old, it's like a fairytale.
"I have always believed in fairytales and with god's grace, my life has been exactly like one, and now as I enter the most important chapter of my life - the fairytale continues," she added.
Rani started her acting career with "Raja Ki Ayegi Baraat" in 1997, after which she featured in movies like "Ghulam", "Kuch Kuch Hota Hai", "Hadh Kar Di Aapne", "Saathiya", "Chalte Chalte", "Hum Tum", "Veer-Zaara", "Black", "Bunty Aur Babli", "Kabhi Alvida Naa Kehna". In more recent years, she has been seen in projects like "No One Killed Jessica", "Aiyyaa", "Talaash" and the actress is due to feature in "Mardaani".