Ontiveros was crowned Nuestra Belleza Jalisco the night of July 22, 2010, and subsequently represented her state in the national competition, held in Saltillo, Coahuila, where she competed against thirty young women from all over the country. Ontiveros became the third consecutive Nuestra Belleza México winner from Jalisco on September 25, 2010, and the fourth in the pageant’s history. She was crowned by the outgoing national titleholder, and reigning Miss Universe 2010 Ximena Navarrete. Ontiveros participated in Miss Universe 2011 pageant, but she was unplaced. After arriving in her home country, México she announced that she would be representing her national soccer team during the 2011 Pan American Games inauguration. Two months after competing in the Miss Universe 2011 pageant Ontiveros is now pursuing a modeling career with Hollywood Model Management in Los Angeles, California.