[3] Already the interim title holder for almost two years, Juárez became full WBC female flyweight World champion when she defeated the previously unbeaten Italian Simona Galassi on 11 March 2011, at Jose Cuervo Salon, Polanco, Mexico.

[9][10] She would hold the belt for more than two years, making nine successful defences before dropping the title via unanimous decision to compatriot Yulihan Luna at the Grand Oasis Arena, Cancun, Mexico on 31 October 2020.

[11][12] The contest was marred by controversy as Juarez, who suffered a broken nose in the opening round, interrupted Luna's post-fight interview to accuse the new champion of using doctored gloves.

[13] [14][6] Juárez attempted to become a three-weight World champion on 10 June 2023, challenging WBC super-bantamweight title holder Yamileth Mercado at the Toyota Arena, Ontario, California, USA, but lost by unanimous decision.

[15][16] Back on home soil at Domo Corona del Hipodromo de las Americas, Mexico City, Mexico, Juárez captured the WBC female super-bantamweight Silver title on 26 April 2024, beating South Africa's Matshidiso Mokebisi by technical knockout in round nine.