Bolívar was born in Miami to a Colombian father and a Nicaraguan mother and speaks English, Spanish and French.

When she auditioned for Nuestra Belleza Latina 2011 she was studying fashion merchandising at Miami International University of Art and Design.

Outgoing titleholder Farah Eslaquit crowned Bolívar as Miss Nicaragua 2013 at the beauty contest that took place at the Ruben Dario National Theater on Saturday night of March 2, 2013.

Bolivar represented Nicaragua at the Miss Universe 2013 pageant on November 9, 2013, in Moscow, Russia where she became the third Nicaraguan woman to place, eventually finishing in the Top 16.

During the preliminary competition Nastassja won Best National Costume and was awarded a $5,000 Credit Card from Russian Standard Bank.