The ...Baby One More Time Tour was the debut concert tour by American recording artist Britney Spears. It supported her debut studio album, ...Baby One More Time (1999) and visited United States and Canada. The tour was announced in March 1999, with dates released a month later. Tommy Hilfiger was chosen as the tour sponsor. An extension of the tour, titled Crazy 2K, was announced in December 1999. Tour sponsors of the second leg were Got Milk? and Polaroid. The concept and costumes were designed by Spears. The stage was changed at the beginning of the second leg to include pyrotechnics and special effects.