As her country 's official representative to the 2004 Miss Universe pageant , held in Quito , Ecuador , Luna placed second to Miss Panama in the Best National Costume competition . On June 1 , 2004 , she became one of the top 15 semifinalists who competed for the Miss Universe title , giving Mexico their first placement in the pageant since Silvia Salgado in 1999
Miss Universe
Miss Universe 2004
Rosalva Luna