Scenes with Vikram and Shriya should have been shot day before yesterday. Vikram and Susi Ganesan with crew were ready. Shriya was to have worn an expensive costume for the scene.
By oversight, Shriya forgot to get that costume from Mumbai. So, the shooting could not happen. So, even though everything was ready, shooting had to be cancelled because the required costume was not there.
Shriya's mother promised to bring the costume from Mumbai and once she arrived, shooting took place.