In Om Shanti Om I read Farah wanted Aishwarya first but SRK refused to work with her and dropped her from many films including OSO. Farah then searched someone who resembles Aishwarya's glamour. She then cast Deepika.
Deepika's first film is also called "Aishwarya". She has always been a replacement for Aishwarya from the very first film.
Does Deepika have better films than Aishwarya?
Deepika's filmography
Om Shanti Om
Chennai Express
Cocktail
Ram Leela
Piku
Bajirao Mastani
Padmavaat
Fighter (Her upcoming with Hrithik)
Aishwarya's filmography
Iruvar
Jeans
Hum Dil De Chuke Sanam
Taal
Josh
Kandukondain Kandukondain
Devdas
Chokher Bali
Raincoat
Bride and Prejudice
Provoked
Dhoom 2
Guru
Jodhaa Akbar
Endhiran
Guzaarish
Sarbjit
Ponniyin Selvan
(This is going to be her biggest film. She is the central character of the film)
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