In one scene, Sita says to Radha that now she has visited New Delhi, she wants to visit Bombay (Mumbai). Radha asks, "To join the movies?". Mumbai is the center of Bollywood films in India.
Radha and Sita are names of deities in Hinduism who are avatars (reincarnations) of Lakshmi, a goddess who is also the consort of Vishnu. Vishnu's counterpart for Radha is Krishna while for Sita it is Rama.