In 2018, Kiara placed Top 5 at Miss Universe 2018.
Ortega was born and raised in Rincón, Puerto Rico. The city is located in the Western Coastal Valley, west of Añasco and Aguada. Rincón is spread over nine wards and Rincón Pueblo. It is part of the Aguadilla-Isabela-San Sebastián Metropolitan Statistical Area. Ortega is currently living in San Juan, Puerto Rico where she is studying nursing.
Ortega decided to enter her first pageant, Miss Universe Puerto Rico, after the pageant was acquired by new owners. She registered for the competition and represented her hometown of Rincón. She competed against 28 other contestants for the chance to represent Puerto Rico at the 67th annual Miss Universe Pageant.
On September 20, 2018, Ortega was crowned Miss Universe Puerto Rico 2018 by the outgoing Miss Universe Puerto Rico 2017, Danna Hernández, at the Luis A. Ferré Fine Arts Center located in San Juan, Puerto Rico.
Since capturing the title, Ortega has been preparing nonstop for the Miss Universe Pageant. She currently works 15 hours a day between classes, appearances and pageant preparation. She has already flown to France where she was a guest of the beauty company, L'Oréal. She also had the opportunity to see several catwalks during the Paris Fashion Week. She also appeared in a recent edition of San Juan Moda for Eclíptica, Gustavo Arango and Luis Antonio.
Ortega will compete for the title of Miss Universe 2018 on December 16, 2018 in Bangkok, Thailand.