But the Sen sisters - Riya and Raima - defy the myth completely, Bollywood Trade reports.
"Riya and I share a very normal sibling relationship. She is very pampered and spoilt. She is bossy at times and she knows she can get away with it. I am possessive about her and warn her to be careful," said Raima.
And when can the audience see the sisters together? "If a good script comes our way and if a director can handle the two of us together then I'm game for it," she chuckled.