And the designer of the dress was not Abu Jani-Sandeep Khosla as reported earlier but Australian designer Angelo Katsapis.
This is the 38-year-old actress' 11th year at Cannes as a L'Oreal brand ambassador, and her first red carpet outing since the birth of daughter Aaradhya last November.
Aishwarya is seen wearing a loose-fitted dress in the photo.
Her Cannes wardrobe was kept a closely guarded secret and it was reported recently that she would be wearing Indian outfits instead of the usual haute couture gowns she sports every year.
Her post-pregnancy weight gain had generated much buzz as well as attracted criticism, so there was much curiosity about her appearance at this year's Cannes.