Bollywood Actress Manisha Koirala Work With Her Brother In Bollywood Movie. Siddharth Koirala is the younger brother of Manisha Koirala and helping to Manisha with his family in New Jersey. Manisha siad that i will work with my brother and i am under going treatment. After get well me and my brother Siddharth Koirala work together in a bollywood project. I will back in industy soon and i will never leave bollywood industry.