Police said the car mounted the pavement while trying to avoid an approaching car from a nearby lane and partially tilted on one side at around 4:30 am near Rashbehari Avenue crossing. Vikram and Sonika, who were on the driver's and passenger seat respectively, were brought out from the mangled car by locals and rushed to a private hospital, police said.
While Sonika was declared dead, Vikram was admitted to the hospital, police said.
A pall of gloom descended as the news of the mishap spread and many Bengali film actors including Dev rushed to the hospital on E M Bypass.
Sonika, a popular face in city and Mumbai modeling circuits, had also been hosting a prime time show on a national channel.
Vikram, whose last film Khoj (The Lost) had been screened in several film festivals, had also acted in 'Elar Char Adhyay' and 'Ami Ar Amar Girlfriends'.