Both are excited to see how the idea shapes up in the film "Kolkata Calling", which is a collage of three stories set in the 70s and 80s, directed by Mainak Bhowmik.
Moonmoon said that Mainak was persistent that they did the scenes together.
"We two feature in one of the three stories and Raima appears in another story. So you might dub it as a film where all three of us are part of it. She said that she had earlier done ad shoots with Riya and a telefilm with Raima.
She said she would like to do new challenging roles, provided the young group of directors want her.
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Riya said the Sen women didn't think about doing a film together, but since it is Mainak's story, they agreed because he treated women's issues and relationships very well.
Riya's role in the latest film of Srijit Mukherjee 'Jaatiswar' also won praise from critics.
"I enjoy the new innings in Bengali films. Happy to see how different subjects and portrayals of characters are being appreciated and I hope we will also be applauded as mother-daughter."
Riya said that 'Kolkata Calling' was not entirely a retro film. "It is a mixture where there are contemporary references and I play a 22-year old.