Playing Sundari, a half-Malayali, half-Tamil character, Janhvi has put effort into capturing the subtleties of the language and dialect.
Janhvi Kapoor's dialect coach Sheba Raju showers praise on her for her accent in Param Sundari: 'You sound perfect as a half Malayali, half Tamil ponnu'Her dialect coach took to Instagram to applaud her dedication and wrote, 'You have worked so hard on getting your Malayalam dialogues and accent correct and I am so proud with how it has come out as a Malayali. The accent, dialect, and diction is perfect and I was so happy to see how you have given your best and paid attention to every detail. You sound perfect as a half Malayali, half Tamil ponnu. Can't wait for everyone to meet Sundari.'

In the trailer, Janhvi's hard work shines through — from the lilting rhythm of her speech to the cultural authenticity she brings on screen. Her final monologue, laced with wit and rooted in her character's South Indian pride, is already being called one of the highlights of the film.
Param Sundari brings together Janhvi Kapoor and Sidharth Malhotra in a North-meets-South love story combining romance, humour, and emotion. With her focus on performance details, Janhvi's portrayal of Sundari could become one of her standout roles.