 Timberlake announced that he would go on a co-headlining tour at the 2003 American Music Awards, and it was officially announced that Aguilera would be the co-headlined artist of the tour on January 14, 2003.Tour dates were revealed on February 21, 2003; it kicked off on June 4, 2003 in Phoenix, Arizona and visited 45 cities in North America.The Black Eyed Peas were serviced as the tour's supporting act.