Prem Vivah is a 1979 Indian Hindi-language film directed by Basu Chatterjee and produced by Ramraj Nahta, starring Mithun Chakraborty, Bindiya Goswami, Utpal Dutt and Asha Parekh.
Asha Parekh plays an unmarried woman in her 30s, past what society considered the marriageable age.
Her younger sister played by Bindiya Goswami has a fiancée Mithun Chakraborty.
Unfortunately, Utpal Dutt falls for Bindiya Goswami and isn't aware that Asha Parekh has fallen in love with him.
How Bindiya untangles herself from this situation and gets Utpal Dutt and Asha Parekh together forms the rest of the story.