However, she won't be seen as a showstopper, a well-placed source said that Rani will attend Sabyasachi's show, and that she will take the front row seat at the event.
Rani is among the top celebrity clients of the ace designer, who is even said to have created a special lehenga for the actress's wedding ceremony.
In April, she married film producer Aditya Chopra in Italy.
On the big screen, Rani, who was last seen in "Talaash: The Answer Lies Within", will next feature in "Mardaani" in which she plays a strong, bold and fearless police officer.
The Shree Raj Mahal Jewellers India Couture Week 2014 will be held for six days at hotel Taj Palace.
Designers like Manish Malhotra, Manish Arora, Anju Modi and Varun Bahl are scheduled to showcase their high-end couture lines.