Representing the state of Baja California, Jones won the title of Señorita Mexico (Miss Mexico) in September, 1990.
A few months later, on May 17, 1991 in Las Vegas, Nevada, U.S., she and 72 contestants competed for the title of Miss Universe 1991.
Lupita became the clear favorite of the judges, entering the semifinals of the pageant in first place, the only delegate with an average score above 9. During the final telecast, Jones breezed through the competition, winning everything: swimsuit, interview and evening gown. As the indisputable leader, she dominated with her articulate answers the next two rounds of competition (the Top 6 judges' questions and the Top 3 final question), winning it all, the crown, the prizes and the prestigious title for her country.
After finishing her reign in 1992, she founded a company named Promocertamen and, in 1994, created Nuestra Belleza Mexico, the Official Mexican Pageant responsible for choosing Mexico's representatives to Miss Universe and Miss World.
In 1999, she decided that the contest would support an important program for ill-treated girls in the country through the Integral Family Development project. In 2000, Jones accepted an appointment as UNFPA Goodwill Ambassador and Face to Face Campaign Spokesperson for Mexico.
Jones studied business administration and also did post-graduate studies in industrial administration at the Centro de Enseñanza Técnica y Superior in her native city of Mexicali, Baja California. She became a successful businesswoman.
After 13 years, she finally produced a winner at one of the 4 most well-known beauty pageants in the planet since 1960: Priscila Perales, Miss International 2007. She is yet to produce a winner in the other two the organization sends contestants to; Miss World and Miss Universe, even failing to place more than twice in each pageant during her first decade as director of her country's 15-year-old beauty organization.
Nevertheless, she has sent in the last four years several successful representatives to the Miss Universe and Miss World pageants, all placing consecutively as semifinalists or runners-up since 2004.
Now she's single and has one son with ex-husband Simon Charaf.
