Madison is always playing in my make-up, and Dallas won't let me play in her make-up.
—Demi in a 2008 interview with Scholastic News
Dallas Leigh Lovato (born February 4, 1988) is an English-American/Irish-American/Mexican-American/Portuguese-American/Jewish-American. She's also Demi's big sister, Amber's younger paternal half-sister & Madison's older maternal half-sister. Dallas was named after the Dallas Cowboys as her mother, Dianna De La Garza, was a Dallas Cowboys Cheerleader during the 1982-1983 season and has always loved the Cowboys. She works with Cambrie, a pageant coach.
- Dallas' English-American & Irish-American on Dianna's side and Mexican-American, Portuguese-American & Jewish-American on Patrick's side.
- Dallas' full name in Mexico is Dallas Leigh Lovato-Smith.