The British boy band One Direction consist of members Niall Horan, Zayn Malik, Liam Payne, Harry Styles, and Louis Tomlinson. They broke history when they became the first British boy band to debut at No. 1 on the U.S. Billboard 200 with their album "Up All Night" selling 176,000 copies in its first week. Take a peek at some of their cute childhood photos!!