Britney Spears emprende tour por el mundo

Singer Britney Spears performs on stage during the 2007 MTV Video Music Awards held at The Palms Hotel and Casino 09 September 2007 in Las Vegas, Nevada. Pop princess Spears opened the star-studded 24th annual MTV Video Music Awards in Las Vegas -- her first major stage event since the birth of her two children. Kevin Winter/Getty Images/AFP = FOR NEWSPAPERS,INTERNET,TELCOS AND TELEVISION USE ONLY = (Photo credit should read KEVIN WINTER/AFP/Getty Images) ORG XMIT:  (KEVIN WINTER / AFP/Getty Images)

Singer Britney Spears performs on stage during the 2007 MTV Video Music Awards held at The Palms Hotel and Casino 09 September 2007 in Las Vegas, Nevada. Pop princess Spears opened the star-studded 24th annual MTV Video Music Awards in Las Vegas -- her first major stage event since the birth of her two children. Kevin Winter/Getty Images/AFP = FOR NEWSPAPERS,INTERNET,TELCOS AND TELEVISION USE ONLY = (Photo credit should read KEVIN WINTER/AFP/Getty Images) ORG XMIT:  (KEVIN WINTER / AFP/Getty Images)

Pop star Britney Spears performs before a sold out crowd at the Molson Center in Montreal Wednesday, Aug. 23, 2000. (AP Photo/Montreal Gazette-Pierre Obendrauf) ORG XMIT: MTLG102  (PIERRE OBENDRAUF / AP)

Story Slug: apeop02.ART|apeop02.ART ** FILE ** Britney Spears performs at the Alamodome in this June 15, 2002 file photo, in San Antonio. (AP Photo/San Antonio Express-News, Edward A. Ornelas, file) ORG XMIT: TXSAE201  (EDWARD A. ORNELAS / AP)

Pop sensation Britney Spears performs on stage at the Pine Knob Music Theatre in Clarkston, Mich., Sunday, July 9, 2000. (AP Photo/Windsor Star, Tim Fraser) ORG XMIT: WDR102  (TIM FRASER / AP)

Story Slug: 20hi.ART|20hi.ART|20hi.ART|20hi.ART FILE--Britney Spears performs with a snake during the finale of the 2001 MTV Video Music Awards in this Sept. 6, 2001file photo, in New York. Spears’ third studio album comes out next month, and it contains a few curse words that she knows some parents may not want their children to hear. “I guess they just shouldn’t buy the album,’’ Spears responded when asked about the language on her new album during a conference call on Wednesday, Oct. 24, 2001. (AP Photo/Beth A. Keiser, File) ORG XMIT: NYET119  (BETH A. KEISER / AP)

Story Slug: apeop17.ART Music recording artist Britney Spears arrives at the launch party for the new album “Celebrity,” Monday, July 23, 2001, at a nightclub in Los Angeles. (AP Photo/Chris Weeks) ORG XMIT: CMW103  (CHRIS WEEKS / AP)

Britney Spears performs “Gimme More,” at the MTV Video Music Awards at the Palms Hotel and Casino on Sunday, Sept. 9, 2007, in Las Vegas.. (AP Photo/Kevork Djansezian) ORG XMIT: CADC147  (Kevork Djansezian / AP)

Britney Spears performs at the MTV Video Music Awards held at the Palms Hotel and Casino on Sunday, Sept. 9, 2007, in Las Vegas. (AP Photo/Mark J. Terrill) ORG XMIT: NVJH160  (Mark J. Terrill / AP)

WASHINGTON - OCTOBER 01: Britney Spear’s wax figure is on display to celebrate the 2nd birthday of the Washington DC’s Madame Tussauds on October 1, 2009 in Washington, DC. (Photo by Kris Connor/Getty Images) ORG XMIT: 91284681  (Kris Connor / Getty Images)

US singer Britney Spears performs on stage before being awarded with a Bambi category pop international during the 60th edition of the Bambi media prize awards ceremony on November 27, 2008 in Offenburg, western Germany. The awards ceremony takes place every year under the patronage of German publisher Hubert Burda and awards nominees in the sectors of communication, entertainment and show business as well as economy, politics and sports. AFP PHOTO DDP/ TORSTEN SILZ GERMANY OUT (Photo credit should read TORSTEN SILZ/AFP/Getty Images) ORG XMIT: 83841912  (TORSTEN SILZ / AFP/Getty Images)

Britney Spears performs onstage at the Bill Graham Civic Auditorium in San Francisco, California, on Sunday, March 27, 2011. Spears’ appearance was taped for the Tuesday’s broadcast of ABC-TV’s “Good Morning America.” (Jose Carlos Fajardo/Contra Costa Times/MCT) ORG XMIT: 1103121 ORG XMIT: CHI1103271821254557 ** HOY OUT, TCN OUT **  (JOSE CARLOS FAJARDO / McClatchy-Tribune)

Story Slug: apeop29.ART|apeop29.ART Pop star Britney Spears entertains fans during a sold out concert at the Molson Amphitheatre in Toronto, Canada Tuesday, Aug. 22, 2000. (AP Photo/CP, Toronto Sun-Mark O’Neill) ORG XMIT: CPT122  (MARK O’ / AP)

**FILE** Britney Spears performs Sunday, Sept. 9, 2007, at the MTV Video Music Awards in Las Vegas, where her performance was panned. Her downward spiral took another twist after a court commissioner earlier this week ordered the pop princess to undergo random drug and alcohol testing twice a week as part of a child custody dispute with her ex-husband. (AP Photo/Mark J. Terrill) ORG XMIT: LA101  (Mark J. Terrill / AP)

SAN FRANCISCO, CA - MARCH 27: Britney Spears attends “Good Morning America’s” Taping Performance At Bill Graham Civic Auditorium on March 27, 2011 in San Francisco, California. (Photo by Max Morse/Getty Images) ORG XMIT: 110828548  (Max Morse / Getty Images)

NEW ORLEANS - MARCH 03: **EXCLUSIVE COVERAGE** Singer Britney Spears performs onstage during the opening night of “The Circus Starring Britney Spears” tour at the New Orleans Arena on March 3, 2009 in New Orleans, Louisiana. (Photo by Kevin Mazur/Getty Images for Jive Records) ORG XMIT: 85177757  (Kevin Mazur / Getty Images for Jive Records)

OFFENBURG, GERMANY - NOVEMBER 27: Singer Britney Spears performs during the Bambi Awards 2008 Show on November 27, 2008 in Offenburg, Germany. (Photo by Andreas Rentz/Getty Images) ORG XMIT: 83841912  (Andreas Rentz / Getty Images)

NEW YORK - DECEMBER 02: Singer Britney Spears performs on ABC’s “Good Morning America” at The Big Apple Circus tent at Lincoln Center on December 2, 2008 in New York City. (Photo by Bryan Bedder/Getty Images) ORG XMIT: 83818401  (Bryan Bedder / Getty Images)