The 42-year-old actress was diagnosed with ovarian cancer last year and was undergoing treatment in New York but last month she announced that she is cancer free.
The 'Bombay' star said that she visited a street fair in Third Avenue in NYC and loved the whole experience.
"I do love shopping on street fairs, have a lemonade, fresh corn, bargain a bit for antique jewellery. Felt great to walk on street," Koirala posted on twitter from New York.
Koirala also found time to watch Baz Luhrmann's recently released film 'The Great Gatsby', which also stars Bollywood megastar Amitabh Bachchan in a special role.
Born in Nepal, Koirala made her Bollywood debut with 'Saudagar' in 1991 and went on to star in successful films like '1942: A Love Story', 'Agni Sakshi', 'Bombay', 'Khamoshi: The Musical' and 'Company'.
Her last release was Ram Gopal Varma's 'Bhoot Returns'.