One Direction through the years, from 'The X-Factor' to solo careers

Zayn Malik (left) with Harry Styles, Niall Horan, Liam Payne and Louis Tomlinson from 'One Direction' seen at BBC Radio One on Aug. 10, 2011 in London.

Members of One Direction: Liam Payne, left, Niall Horan, Harry Styles, Zayn Malik, and Louis Tomlinson, in 2012.

Louis Tomlinson, Niall Horan, Harry Styles, Liam Payne and Zayn Malik of One Direction perform at HMV Hammersmith Apollo on January 22, 2012 in London, England.

One Direction get matchy-matchy on the red carpet at attends Nickelodeon's 2012 Kids' Choice Awards held at Galen Center in Los Angeles.

In this Sept. 6, 2012, photo, British band One Direction, from left, Louis Tomlinson, Liam Payne, Harry Styles, Zayn Malik and Niall Horan pose backstage after winning the awards for Best New Artist and Best Pop Video for the track, "What Makes You Beautiful" at the MTV Video Music Awards, Los Angeles.

The new wax figures of British band One Direction are revealed at Madame Tussauds in central London, from left to right, Niall Horan , Zayn Malik, Louis Tomlinson, Liam Payne, and Harry Styles, Thursday, April 18, 2013. (Photo by Joel Ryan/Invision/AP) ORG XMIT: JRLON101

Louis Tomlinson and Harry Styles accept the Choice Group award at the Teen Choice Awards 2013.

Louis Tomlinson, left, Zayn Malik, Niall Horan, Harry Styles and Liam Payne of One Direction hit the red carpet for their film's premiere.

Louis Tomlinson, left, Niall Horan, Zayn Malik, Liam Payne and Harry Styles of One Direction have come a long way since getting losing Britain's 'X-Factor.' Here, they promo their documentary,"One Direction: This Is Us" on Aug. 19, 2013 in London.

Zayn Malik, Liam Payne, Louis Tomlinson, Niall Horan and Harry Styles of One Direction speak onstage during the 2013 MTV Video Music Awards at the Barclays Center on August 25, 2013 in the Brooklyn borough of New York City.

One Direction performs "Story of My Life" at the American Music Awards in November 2013.

Zayn Malik accepts the award for new artist of the year at the American Music Awards at the Microsoft Theater on Sunday, Nov. 20, 2016, in Los Angeles. (Photo by Matt Sayles/Invision/AP)

(L-R) Singers Niall Horan, Liam Payne, Harry Styles and Louis Tomlinson of One Direction perform onstage during 102.7 KIIS FM’s Jingle Ball 2015 Presented by Capital One at STAPLES CENTER on December 4, 2015 in Los Angeles, California.

Liam Payne and Harry Styles of One Direction sing the ABCs with Bert.

(L-R) Harry Styles, Liam Payne, Niall Horan, and Louis Tomlinson of One Direction perform on ABC's 'Good Morning America' at Rumsey Playfield, Central Park on August 4, 2015 in New York City.

(L-R) Recording artists Niall Horan, Louis Tomlinson, Harry Styles and Liam Payne of One Direction accept the Top Touring Artist award onstage during the 2015 Billboard Music Awards at MGM Grand Garden Arena on May 17, 2015 in Las Vegas, Nevada.

(L-R) Recording artists Harry Styles, Niall Horan, Liam Payne, Louis Tomlinson and Zayn Malik of One Direction accept the Favorite Pop/Rock Band/Duo/Group award onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California.

Recording artist Harry Styles of One Direction accepts the Favorite Pop/Rock Album award for 'Midnight Memories' onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California.

(L to R) Liam Payne, Niall Horan, Harry Styles and Zayn Malik, of One Direction, pose upon their arrival at the Palais des Festivals to attend the 16th Annual NRJ Music Awards on December 13, 2014 in Cannes, France.

(L-R) Recording artists Harry Styles, Zayn Malik and Niall Horan of One Direction perform onstage at the 2014 American Music Awards at Nokia Theatre L.A. Live on November 23, 2014 in Los Angeles, California.

ORLANDO, FL - Nov.17: Harry Styles, Liam Payne, Louis Tomlinson and Niall Horan of One Direction appear on NBC's Today Show to release their new album "Four" at Universal City Walk At Universal Orlando on November 17, 2014 in Orlando, Florida.  Member Zayn Malik missed the show supposedly due to a stomach bug.

Niall Horan (L) took a group selfie with his fellow One Direction bandmates ahead of the band's livestream show this week.

"One Direction: Where We Are – Live from San Siro Stadium" was released on DVD in October 2014.

One Direction performs Tuesday, Sept. 16 2014 at the University of Phoenix Stadium in Glendale, Arizona.

One Direction performs Sept. 16, 2014, on their Where We Are Tour at the University of Phoenix Stadium in Glendale, Arizona.

The group performs on "One Direction: The TV Special" on December 4, 2014.

One Direction performs to an estimated crowd of 50,000 at LP Field on Tuesday, August 19, in Nashville, Tenn.

Liam Payne performs at the BBC Radio 1 Teen Awards 2017 at Wembley Arena on Oct. 22, 2017 in London.

Harry Styles performs during his Phoenix tour stop at Comerica Theatre, Saturday, October 14, 2017.

Louis Tomlinson accepts the award for Best Male Artist at the Teen Choice Awards in 2018.