Bambi Award 2008 - Show

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OFFENBURG, GERMANY - NOVEMBER 27: Singer Britney Spears performs during the Bambi Awards 2008 Show on November 27, 2008 in Offenburg, Germany.

1999 MTV Video Music Awards

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Britney Spears performing on the 1999 MTV Music Video Awards at the Metropolitan Opera House, Lincoln Center in New York City on September 9, 1999.

29th Annual AMAs - Show

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Britney Spears performing on the 29th Annual American Music Awards at the Shrine Auditorium in Los Angeles, Ca., January 9, 2002.

Britney Spears Concert

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Britney Spears performing at the Nassau Veterans Memorial Coliseum in Uniondale, New York on November 7, 2001.

MTV Super Bowl Halftime

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Justin Timberlake, Steven Tyler, Britney Spears, and Nelly on stage during MTV's Superbowl halftime show at Raymond James Stadium in Tampa, Fla.. 1/28/01

Michael Jackson Concert - Day 1

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Michael Jackson performs with Britney Spears during the Michael Jackson "30th Anniversary Celebration, The Solo Years" concert at New York's Madison Square Garden, Friday, Sept. 7, 2001.

2000 MTV Video Music Awards

Britney Spears performing at the 2000 MTV Video Music Awards at Radio City Music Hall in New York City. 9/7/2000

Britney Spears, Madonna, and Christina Aguilera

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NEW YORK - AUGUST 28: Singers Britney Spears(L), Madonna, and Christina Aguilera perform onstage during the 2003 MTV Video Music Awards at Radio City Music Hall on August 28, 2003 in New York City.

Britney Spears and Madonna

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NEW YORK - AUGUST 28: Singers Britney Spears(L) and Madonna perform onstage during the 2003 MTV Video Music Awards at Radio City Music Hall on August 28, 2003 in New York City.

Britney Spears

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NEW YORK - SEPTEMBER 7: American pop star Britney Spears performs a cover of "Satisfaction" by the Rolling Stones on stage at the MTV music video awards on September 7, 2000 in New York.

Britney Spears

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WASHINGTON - SEPTEMBER 3: Singer Britney Spears rehearses for the 2003 "NFL Kickoff Live from the National Mall" September 3, 2003 in Washington, DC. Thousands of U.S. military personnel are expected to attend the concert featuring Spears, Mary J. Blige, Aerosmith, Good Charlotte and Aretha Franklin September 4 in Washington, DC.

Britney Spears

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PHILADELPHIA - JULY 5: American pop star Britney Spears performs on stage during her "Oops I Did It Again" Tour on July 5, 2000 in London.

Britney Spears

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NEW YORK - NOVEMBER 10: Britney Spears performs on stage during "Spankin' New Music Week" on MTV's Total Request Live outside at the MTV Times Square Studios November 10, 2003 in New York City.

31st Annual American Music Awards - Show

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LOS ANGELES - NOVEMBER 16: Singer Britney Spears performs on stage during the 31st Annual American Music Awards at The Shrine Auditorium November 16, 2003 in Los Angeles, California.

Britney Spears

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DUBLIN - NOVEMBER 11: American pop star Britney Spears performs on stage at the Mtv European Music Awards held at The Point on November 11, 1999 in Dublin, Ireland.

Britney Spears Performs In San Diego

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SAN DIEGO, CA - MARCH 2: Singer Britney Spears performs at the Sports Arena on Tuesday, March 2, 2004 in San Diego, California.

Britney Spears

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LOS ANGELES - FEBRUARY 23: American pop star Britney Spears performs on stage at the 42nd Annual Grammy Awards at the Staples Center on February 23, 2000 in Los Angeles, United States.

Britney Spears

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LOS ANGELES - FEBRUARY 23: American pop star Britney Spears performs on stage at the 42nd Annual Grammy Awards at the Staples Center on February 23, 2000 in Los Angeles, United States.

UK: Britney Spears Plays Wembley Arena

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LONDON - APRIL 26: Pop star Britney Spears plays first night of her "UK Onyx Hotel Tour 2004" at Wembley Arena on April 26, 2004 in London. The tour is her first UK tour since 2000, and features her greatest hits alongside tracks from current album In The Zone.

Britney Spears Concert

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Britney Spears performing at the Nassau Veterans Memorial Coliseum in Uniondale, New York on November 7, 2001.

NBA All Star Read To Achieve

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Britney Spears performs at the 2002 NBA All Star "Read To Achieve" celebration at the Pennsylvania Convention Center in Philadelphia, Pa. 2/9/02

31st Annual American Music Awards - Show

(Photo by Frank Micelotta/Getty Images)

LOS ANGELES - NOVEMBER 16: Singer Britney Spears performs on stage during the 31st Annual American Music Awards at The Shrine Auditorium November 16, 2003 in Los Angeles, California.

Britney Spears

(Photo by Frank Micelotta/Getty Images)

WASHINGTON - SEPTEMBER 4: Singer Britney Spears performs for the 2003 "NFL Kickoff Live from the National Mall" September 4, 2003 in Washington, DC. Thousands of U.S. military personnel are attending the concert which features Spears, Mary J. Blige, Aerosmith, Good Charlotte and Aretha Franklin.

NRJ Music Awards Ceremony

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CANNES, FRANCE - JANUARY 23: Singer Britney Spears performs during the NRJ Music Awards ceremony January 24, 2004 in Cannes, southern France.

NRJ Music Awards Ceremony

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CANNES, FRANCE - JANUARY 23: Singer Britney Spears performs during the NRJ Music Awards ceremony January 24, 2004 in Cannes, southern France.

Showtime Presents Britney Spears Live In Miami

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MIAMI - MARCH 28: Singer Britney Spears performs onstage during Showtime's live broadcast of Britney's Onyx Hotel tour show at the American Airlines Arena March 28, 2004 in Miami, Florida.

Sweden: Britney Spears Plays Stockholm

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STOCKHOLM, SWEDEN - MAY 11: Popstar Britney Spears performs on stage during her 2004 "Onyx Hotel Tour" at Globe Arena, on May 11, 2004 in Stockholm, Sweden.

Britney Spears Plays Belfast

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BELFAST, NORTHERN IRELAND - JUNE 1: Britney Spears performs at the Odyssey Arena June 1, 2004 in Belfast, Northern Ireland.

Smash Hits Poll Winners Party 1999

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LONDON - DECEMBER 05: Singer Britney Spears performs at the Smash Hits Poll Winners Party 1999 held in the London Arena,London,England on the 5th of December 1999.

Madonna Performs at Dodger Stadium

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LOS ANGELES, CA - NOVEMBER 06: Singer Madonna, with special guest singer Britney Spears, performs during her Sticky and Sweet Tour at Dodger Stadium on November 6, 2008 in Los Angeles, California.

Britney Spears Performs On ABC's "Good Morning America"

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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.

Britney Spears

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Teen pop sensation, Britney Spears performing at the Universal Ampitheater for her "Baby One More Time" tour in Universal City, CA, July 31, 1999

Britney Spears Performs On ABC's "Good Morning America"

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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.

"The Circus Starring Britney Spears" Tour Opens In New Orleans

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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.