Formerly dated backup dancer Jorge Santos. Christina co-wrote the songs "Infatuation" and "Loving Me 4 Me" about the relationship.
Was offered the role of Stephanie Necrophuros in Nine (2009), but turned it down due to scheduling conflicts with her upcoming album recording. Kate Hudson was cast instead.
Although she is half-Ecuadoran and has released a Spanish album, she is not fluent in Spanish.
Made the Top 20 in FHM Magazine's 100 Sexiest Women.
With co-performers Lil' Kim, Pink and Mya, won two awards at the 2001 MTV Video Music Awards for "Lady Marmalade." One was for the prestigious 'Best Video Of The Year' award and the other for the 'Best Song From A Movie Soundtrack' award (Moulin Rouge).