Britney Spears: Piece of Me Remixed. Reimagined. Still iconic. At Planet Hollywood Hotel & Casino [Getty Images]

LAS VEGAS, NV - FEBRUARY 26: (EXCLUSIVE COVERAGE) Britney Spears performs Britney Spears: Piece of Me Remixed. Reimagined. Still iconic. At Planet Hollywood Resort & Casino on February 26, 2016 in Las Vegas, Nevada. (Photo by Denise Truscello/BSLV/Getty Images for Brandcasting, Inc)

Getty Images Entertainment Denise Truscello/BSLV