Formed in 2010, the five lads in 1D—Harry Styles, Zayn Malik, Niall Horan, Liam Payne and Louis Tomlinson—have taken the musical world by storm.
Zayn Malik announced he has decided to leave One Direction after five years. The singer also revealed on the band's facebook page, "I'd like to apologise to the fans if I've let anyone down, but I have to do what feels right in my heart. I am leaving because I want to be a normal 22-year-old who is able to relax and have some private time out of the spotlight. I know I have four friends for life in Louis, Liam, Harry and Niall. I know they will continue to be the best band in the world."
The boys visited Sesame Street and sang a tune about what makes the letter "U" useful.
The British band performed a concert for fans at the Estadio Nacional in Santiago, Chile.
Hello handsome! The musicians worked it for the cameras at the Pride of Britain Awards.
The heartthrobs won three awards at the 2014 American Music Awards at Nokia Theatre L.A.
The guys talked to Matt Lauer on NBC's Today Show to release their new album "Four."
Gotta catch 'em all! The boybanders made an appearance at the launch of new Pokemon games for the DS console.
One Direction performed live at Radio 1's Big Weekend in Glasgow, Scotland.
The five guys arrive to the 2014 Brit Awards looking as stylish as ever.
Jimmy Fallon and The Roots sang with 1D for a special version of "Santa Claus is Coming to Town."
The studs all wear black to the GQ Men Of The Year Awards at The Royal Opera House.
The boys charmed the audience during their stop by The Tonight Show Starring Jimmy Fallon.
Can you tell the difference between the real members of 1D from their wax figures?
It's movie night in London as the boy band celebrates their 3D movie premiere.
The group partied with Danny DeVito in their music video for "Steal My Girl."
The guys smile for the cameras all the way in Germany.
The boys look dapper while attending the 40 Principales Awards 2014 photocall at the Barclaycard Center.
Will tickets sell out for the band's 3D movie? This shirtless picture will certainly help.
Before their 2013 Teen Choice Awards performance, the group poses with their favorite swag.
Joined by Rosie Huntington-Whiteley, the five members of One Direction grace the cover of Glamour.
We have X-Factor host Simon Cowell to thank for bringing these guys together.
The guys are red carpet ready at the London premiere of their new 3D movie.
Queen Elizabeth II couldn't resist meeting the guys at the summer Olympic Games.