"Mixed Up World" is a song by British singer-songwriter Sophie Ellis-Bextor, released on 13 October 2003 as the lead single from her second studio album, Shoot from the Hip (2003). Written by Bextor, Greg Alexander and Matt Rowe, it was produced by both Alexander and Rowe, it reached number seven on the UK Singles Chart and was especially successful in Denmark, where it debuted and peaked at number three.