Miss Honduras World 2014, Maria Jose Alvarado, and her sister, Sofia Trinidad, have been missing since last week, beauty pageant organiser Eduardo Zablah has said.
The beauty queen and her sister have not been seen since Thursday, Zablah said.
The two women disappeared after attending a birthday party in Santa Barbara, a region in western Honduras, Zablah said.
Police was not informed that the Alvarado sisters were missing until Saturday, Zablah said in a brief statement.
Maria Jose Alvarado, a 19-year-old from Santa Rosa de Copan in western Honduras, was selected Miss Honduras World 2014 April 26.
Alvarado was expected to represent Honduras in the Miss World 2014 contest in London next month.