'Today' show through the years

Matt Lauer, dressed as the iconic androgynous character Pat, left, Savannah Guthrie, dressed in "mom jeans" and Natalie Morales dressed as the iconic character Mary Katherine Gallagher from "Saturday Night Live" appear during a Halloween episode of NBC's "Today" show on Friday, Oct. 31, 2014, in New York.

Neil Diamond performs on NBC's "Today" show on Monday, Oct. 20, 2014, in New York.

Kenny Chesney performs on NBC's "Today" show on Tuesday, Sept. 23, 2014 in New York.

Usher performs on NBC's "Today" show on Friday, Sept. 5, 2014 in New York.

Willie Geist, Tamron Hall, Matt Lauer and Al Roker appear on NBC's "Today" show on Tuesday, Aug. 19, 2014, in New York.

Iggy Azalea performs on NBC's "Today" show on Friday, August 8, 2014 in New York.

Al Roker on the set of NBC News' "Today" show in Manhattan on April 18, 2013.

Ann Curry, left, Matt Lauer, Meredith Vieira, and weatherman Al Roker, right, of NBC's "Today" show pose for photographers on May 15, 2006, on the red carpet as NBC introduces its new season.

Then the co-hosts of NBC's "Today," Matt Lauer and Ann Curry appear during a segment of the show in New York on July 22, 2011.

"Today" show co-hosts Meredith Vieira and Matt Lauer talk with homeless man Ted Williams on NBC's "Today" show in Manhattan on Jan. 6, 2011.

Singer Bruno Mars performs on NBC's "Today" at Rockefeller Center in Manhattan on June 24, 2011.

Meredith Vieira leans on the shoulder of her fellow co-host Matt Lauer during her final show on NBC's "Today" show on June 8, 2011.

"Today" co-hosts Matt Lauer and Meredith Vieira hold hands on Vieira's last day on the show on June 8, 2011.

Rihanna performs on NBC's "Today" in Rockefeller Plaza in Manhattan. A small fire at a recent Dallas show caused Rihanna to cancel her set on May 27, 2011.

Co-host Ann Curry talks with actress Charlize Theron about her new movie "Young Adult" on the "Today" show in Manhattan on Dec. 9, 2011.

Chris Brown performs on NBC's "Today" show at Rockefeller Plaza in Manhattan on July 15, 2011.

Lenny Kravitz performs on NBC's "Today" show at Rockefeller Plaza in Manhattan on Sept. 2, 2011.

Lady Gaga performs on NBC's "Today" at Rockefeller Center in Manhattan on July 9, 2010.

Justin Bieber performs on NBC's "Today" in the TODAY Plaza in Manhattan on Nov. 23, 2011.

Justin Bieber and Usher perform on NBC's "Today" in the TODAY Plaza in Manhattan on Nov. 23, 2011.

Ke$ha performs on "Today" at Rockefeller Center in Manhattan on Aug. 13, 2010.

Chris Daughtry performs with Daughtry on NBC's "Today" show in Rockefeller Center on Aug. 20, 2010.

"Today" show correspondent Matt Lauer is interviewed during the "Today" show 60th anniversary celebration at The Edison Ballroom in Manhattan on Jan. 12, 2012.

"Today” show co-host Ann Curry attends the “Today” Show 60th anniversary celebration at The Edison Ballroom in Manhattan on Jan. 12, 2012.

Carrie Underwood shows off her wedding ring on NBC's "Today" at Rockefeller Center in Manhattan on July 30, 2010.

Former "Today" show correspondent Katie Couric attends the "Today" Show 60th anniversary celebration at The Edison Ballroom on Jan. 12, 2012.

SI Swimsuit 2012 cover model Kate Upton visits NBC's "Today Show" at Rockefeller Center in Manhattan. (Feb. 14, 2012)