"Aishwarya is working hard for the film. She is working hard to lose weight. I can say she will be seen as 'Dhoom Girl' in the film," the film's producer Doshi said.
Doshi, who has produced films like Bawandar and Aankhen, said it was the script that convinced the actress who had taken a sabbatical after becoming a mother.
Set to go on the floors early next year, Happy Anniversary will be directed by Prahlad Kakkar and will hit the screens next year itself.
"I share a good relationship with Mr. Bachchan but it was the script that convinced Aishwarya and Abhishek. I think Abhi and Ash are the ideal couple and they both look good together. The film will be widely shot in South Africa," said Doshi.