In the scene at Upen Patel's birthday, in one shot Katrina's hair is loose, the next shot it is tied back with a clutch, then in the next shot it is loose.
In the climax, where Katrina is speaking to the media, just before she starts towards the gate her earrings are clearly visible, yet in the next shot when she is giving back her jewelry to Upen Patel, her earrings have disappeared.
When Ranbir piles his plate with non-veg items in the club, he takes a large fish as well, but the fish mysteriously vanishes when he sits down.