Aristizábal began her pageantry career in 2019, after being crowned Miss Quindío 2019.[7] This title gave her entry into the Señorita Colombia 2019 competition, representing Quindío Department.[8]
The competition began in November 2019, held in Cartagena.[9] In pre-pageant activities, Aristizábal emerged as a frontrunner after winning a number of special awards, including Queen of the Police and Best Body.[9][10][11]
Finals night was ultimately held on 11 November.[9] Aristizábal made the first cut into the Top 10, and then continued into the Top 5. She was ultimately crowned Miss Colombia 2020 by outgoing titleholder Gabriela Tafur, becoming the first woman from Quindío to win the title, besting first runner-up María Alejandra Salazar of Huila.[12][13] As Miss Colombia, she was to represent Colombia at Miss Universe 2020.[8][14][15] In June 2020, Natalie Ackermann gained ownership of the Colombian franchise to Miss Universe, confirming that a new pageant "Miss Universe Colombia" would be held to select the Colombian representative in 2020, and that Aristizábal would not be going to Miss Universe.[16]
Miss Universe 2022
After finishing her reign as Miss Colombia, she began talks to be appointed as Miss Universe Colombia 2022. After reaching an agreement, she was announced on 6 April 2022 as Colombia's representative at Miss Universe 2022 through a press conference.[17] As a result, Natalia López Cardona, the first runner-up of Señorita Colombia 2021, also from Quindío, replaced her to compete in Miss International 2022.[18] At the end of the 71st edition of Miss Universe, she ended up her journey early as Top 16 semifinalist.[1]