Tours …Baby One More TimeTour 1999 Crazy 2KTour 2000 Oops!… I Did It AgainTour 2000 Dream Within A DreamTour 2001-2002 The Onyx HotelTour 2004 The M+MsTour 2007 The Circus Starring Britney Spears Tour 2009 Femme FataleTour 2011 Britney: Piece of MeLas Vegas 2013-2015 Live In Concert Tour 2017 Piece Of Me Exclusive Limited Tour 2018 Once Upon A One More TimeMusical