The Re-Invention World Tour was the sixth concert tour by American singer Madonna, launched in support of her ninth studio album, American Life (2003). It began on May 24, 2004, at the Forum in Inglewood, California, and concluded on September 14 at the Pavilhão Atlântico in Lisbon, Portugal. The tour marked Madonna's return to the stage after three years and included her first-ever concerts in both Portugal and Ireland. Initially rumored in late 2003 and officially announced in March 2004, the tour's title referenced the singer's reputation for reinvention, as well as her aim to rework and reimagine older songs. The 24-track set list was divided into five thematic acts —Marie Antoinette, Military, Circus, Acoustic, and Scottish-Tribal— with costumes designed by Arianne Phillips, Stella McCartney, Christian Lacroix, and Karl Lagerfeld.