PICTURES: Super Bowl XLIX - Halftime Show

A general view as singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)

Fireworks explode as singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Kevin C. Cox / Getty Images)

Singer Katy Perry performs with Missy Elliott during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

Singer Katy Perry performs with Missy Elliott during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

Singer Katy Perry performs with Missy Elliott during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

A general view as singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

A general view as singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the New England Patriots and the Seattle Seahawks Sunday, Feb. 1, 2015, in Glendale, Ariz.  (Tim Donnelly / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.  (David J. Phillip / AP)

Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (Tim Donnelly / AP)

Katy Perry gives a thumbs up after performing during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots on Sunday, Feb. 1, 2015, in Glendale, Ariz.   (Brynn Anderson / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Singers Katy Perry, left, and Missy Elliott perform during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Singers Katy Perry, left, and Missy Elliott perform during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Singer Katy Perry performs with Lenny Kravitz during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Jamie Squire / Getty Images)

Singer Katy Perry performs with dancers during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

Singer Katy Perry performs with dancers during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Jamie Squire / Getty Images)

Recording artist Katy Perry and recording artist Missy Elliott perform onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christopher Polk / Getty Images)

Recording artist Katy Perry and recording artist Missy Elliott perform onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Christopher Polk / Getty Images)

Recording artist Katy Perry and recording artist Missy Elliott perform onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Christopher Polk / Getty Images)

Singer Katy Perry performs with Lenny Kravitz during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Rob Carr / Getty Images)

Singer Katy Perry performs with Lenny Kravitz during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Rob Carr / Getty Images)

Singer Lenny Kravitz performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Ronald Martinez / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Rob Carr / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Rob Carr / Getty Images)

Dancers perform during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Stephen Dunn / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Christian Petersen / Getty Images)

Singers Katy Perry and Lenny Kravitz perform during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

A general view as singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Mike Ehrmann / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Rob Carr / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Rob Carr / Getty Images)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (Michael Conroy / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (David J. Phillip / AP)

Katy Perry, right, and Lenny Kravitz perform during halftime of the NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.  (Matt Slocum / AP)

Katy Perry, center, performs during halftime of NFL Super Bowl XLIX football game between the New England Patriots and the Seattle Seahawks Sunday, Feb. 1, 2015, in Glendale, Ariz.  (Tim Donnelly / AP)

Singer Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (Michael Conroy / AP)

Katy Perry performs during halftime of the NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.   (Mark Humphrey / AP)

Katy Perry performs during halftime of NFL Super Bowl XLIX football game between the Seattle Seahawks and the New England Patriots Sunday, Feb. 1, 2015, in Glendale, Ariz.  (Charlie Riedel / AP)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Stephen Dunn / Getty Images)

Singer Katy Perry performs with dancers during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

Dancers perform during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Stephen Dunn / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Christian Petersen / Getty Images)

Singer Katy Perry performs with dancers during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Rob Carr / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Rob Carr / Getty Images)

Recording artist Katy Perry performs onstage during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Karl Walter / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Harry How / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Harry How / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Ronald Martinez / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.  (Andy Lyons / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Ronald Martinez / Getty Images)

Singer Katy Perry performs during the Pepsi Super Bowl XLIX Halftime Show at University of Phoenix Stadium on February 1, 2015 in Glendale, Arizona.   (Andy Lyons / Getty Images)