The Nuestra Belleza Mundo México title was won by Marilyn Chagoya from Veracruz who later competed in Miss World 2013 in Indonesia. Chagoya was crowned by outgoing Nuestra Belleza Mundo México titleholder Mariana Berumen. She is the first and only Veracruzana to win this title.
Lucero Montemayor from Nuevo León was designated by the Nuestra Belleza México Organization as Nuestra Belleza Internacional México 2013. She later competed in Miss International 2013 in Japan. She is the third Neoleonesa to win this title.
This year for the first time a contestant was elected by a virtual casting and after eleven years, two events were held separately to select the two winners for the titles Nuestra Belleza México and Nuestra Belleza Mundo México, for the fifth time in the history of the pageant.
Two days before to the final competition was held, the semifinal competition featured a live show entitled "Nuestra Belleza Mundo Mexico" in which it was announced the winner of the Nuestra Belleza Mundo México title was Marilyn Chagoya from Veracruz, who would represent Mexico at Miss World 2013. All contestants competed in swimsuit and evening gown categories during the contest.
The Nuestra Belleza Mundo México pageant was held at the Poliforum del Centro de Convenciones of Tuxtla Gutiérrez, Chiapas, Mexico, on August 30, 2012 and was hosted by Mariana Berumen, Karina González and Jan. It was the 5th edition of the Nuestra Belleza Mundo Méxicmcontest and as an official separate pageant to choose Mexico's representative to Miss World. The winner of this event did not compete in the final night competition.
In this competition, the costumes are evaluated instead of the contestants. It is a competition showing the country's wealth embodied in the colorful and fascinating costumes made by Mexican designers combining the past and present of Mexico.
For the Nuestra Belleza México Organization, this event is very important because it discloses the creative work of the great Mexican designers and also selects the costume to represent Mexico in Miss Universe the next year. Also, some costumes are selected to represent Mexico in other beauty contests.
The winning costume designer received the "Aguja Diamante Award".
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For the only time in the history of the competition, a virtual casting was held for the girls who failed to become finalists in their respective states. Three finalists were chosen, with the winner being elected by the fan votes and announced on July 20, 2012.
Chiapas – Karla Ruíz was the winner of Nuestra Belleza Chiapas 2012. The Nuestra Belleza Turismo Chiapas 2012, Valeria Ruíz was who represented Chiapas in Nuestra Belleza México 2012. Karla Ruíz left the competition after developing symptoms of chickenpox that precluded her participation in the contest. Instead Valeria Ruíz took her deputy who joined activities with other state representatives days later.
Nuevo León won the Nuestra Belleza México title for the fourth time (before 1997, 1998 and 2005)
Veracruz won the Nuestra Belleza Mundo México title for the first time ever.
Nuevo León won the Nuestra Belleza Internacional México title for the third time (before 2007 and 2009) and was the Suplente/1st Runner-up for the third time (before 2003 and 2004).
This year there was a new change, for the first time a contestant was elected by a virtual casting.
Cynthia Duque's crown fell to the ground after she was crowned, suffering major damage.
After eleven years, the Final Competition to select to "Nuestra Belleza Mundo México" returned to the program.
For the first time, Oaxaca had two representatives in the competition.
For the first time, a State (Distrito Federal) had two Beauty Queens.
Tlaxcala returns to competition after three years (2009).
Guerrero returns to competition after two years (2010).
Jalisco was placed for the ninth consecutive year in the Top 5.
Aguascalientes was placed for the third consecutive year in the Top 5.
Jalisco and Nuevo León were placed for the tenth consecutive year.
Aguascalientes and Sinaloa were placed for the fifth consecutive year.
Distrito Federal was placed for the fourth consecutive year.
Morelos was placed for the third consecutive year.
Chiapas and Guanajuato were placed for the second consecutive year.
Veracruz returned to making calls to the semi-finals after two years (2010), Baja California and Chihuahua after three years (2009), San Luis Potosí after four years (2008), Nayarit after six years (2006)
States that were called to the semi-finals last year and this year failed to qualify were Baja California Sur, Durango, Estado de México and Sonora.
Chihuahua won Miss Talent for the second time (before 2009).
Nuevo León won Contestants' Choice and Miss Sports for the first time.
San Luis Potosí won for the first time a Fast-track, Miss Top Model.
Veracruz won for the first time a Fast-track, the Academic Award and Best National Costume.
The host delegate, Valeria Ruíz from Chiapas placed to semi-finals.
Baja California – Jeraldine González was selected to represent Mexico in Reina Hispanoamericana 2012 in Santa Cruz, Bolivia on October 25, 2012 where she won Miss Elegance.
Baja California Sur – Diana Castro was elected Reina Del Carnaval La Paz 2012 and Nuestra Belleza La Paz 2012, competition prior to the final state.
Coahuila – Cecilia Vázquez was Reina de Turismo Coahuila 2010 and today she is a Professional Model.
Colima – Mirna Parra was elected Reina Armería 2010 in Ciudad de Armería, Colima. In 2011 she competed in Reina de la Feria de todos los Santos Colima 2011. In 2013 she married her boyfriend of several years.
Chiapas – Karla Ruíz left the competition for health reasons, and who had symptoms of chickenpox that precludes their participation in the contest. Instead Valeria Ruíz took his deputy who joined activities with other state representatives days later.
Chihuahua – Gabriela Prieto was part of Mexico's Next Top Model 2011, but she resigned from the competition because she missed her family. In 2012 she was elected Señorita Ciencias Políticas, UACH in her University. Competed in Reina Hispanoamericana 2013 where she was 3rd Runner-up and obtained the Miss Photogenic and Look Oster awards. Actually she is the new State Coordinator of Nuestra Belleza Chihuahua.
Distrito Federal – Karen Padilla was born in San Juan de los Lagos, Jalisco but she has been living in Mexico City for several years. She is a Professional Model. She competed in Miss Continente Americano 2012 where she was a finalist in the Top 6 and won Miss Photogenic award.
Durango – Ana Victoria Sánchez was elected Reina del Club Campestre de Durango 2008.
Guanajuato – Elisa Espinoza was elected Señorita Universidad de Guanajuato 2011. Competed in Miss Costa Maya International 2014, held in Belize on August 9, 2014 obtained the crown.
Guerrero – Fátima Hernández was Reina de la Expo-Feria de la Palmera 2010 in Zihuatanejo.
Jalisco – Ana Karen Siordia is a Professional Model, she works at Look Models Management in Mexico City.
Jalisco – Jacqueline Sauza studied at CEA. She received an award at the 2011 TVyNovelas Award as New Release. Also she is a Professional Model.
Morelos – Chiara Leuzinger is of Swiss father and Italian mother.
Sonora – Gabriela Saldívar was crowned Nuestra Belleza Cajeme 2012 title she gave the right to participate in the final state of Nuestra Belleza Sonora 2012 which was the winner.
Tlaxcala – Carla Tapia was born in Tepatitlan, Jalisco and competed in Nuestra Belleza Jalisco 2010. The same year, she was elected Miss Earth Jalisco 2010 and competed in Miss Earth México 2010 where she was a finalist in the Top 8. After time she moved to live in Tlaxcala where she was designated as Nuestra Belleza Tlaxcala 2012, marking the return of this State to the national competition after three years. Marilé del Rosario Señorita México 1989 the only Tlaxcalteca who participated in Miss Universe is supporting the state pageant. She represented Mexico at Miss Yacht Model International 2013 in Sanya, China where she was the 4th Runner-up.
Veracruz – Marilyn Chagoya was elected Nuestra Belleza Poza Rica 2012, competition prior to the final state. She competed in Miss World 2013, but she didn't place.