Giselli was born in Espirito Santo one of the costal states of southeastern Brazil.
She came to Mumbai in 2008 after having traveled and worked extensively in Italy, Germany, France, Greece, Hong Kong, Singapore, Thailand and Philippines. She began her acting career in the Hindi Film Industry, portraying the role of the contemporary Punjabi girl, Harleen Kaur, in Imtiaz Ali?s Love Aaj Kal. There was rarely a fan or a critic who was not taken with the innocent portrayal of the girl who Saif woos in one half of the movie.
In 2010, Giselli appeared on the celebrated Brazilian television show, Fantastico, speaking about in her home in Mumbai and life in Bollywood.
She continues to believe that the sky is the limit if she gives Hindi cinema her best shot. For all the talk of crossover stars and of people trying to make it in Hollywood, one day in the future the world might recognize Giselli as one of the first true examples of a genuinely successful crossover actor.