The 18-year-old 'Boyfriend' singer said that he went for a shorter style after he noticed everyone, including the 'What Makes You Beautiful' hitmakers' Liam Payne, had the same style as him, reported Contactmusic.
"It was more like - everyone's got my hair now and I need to change it up a little bit! Once I had my hair, I felt everybody else started to do the same thing, so I decided to change it," Bieber said.
Pointing at a picture of Payne, he added, "I mean, does that look a little familiar? Just a touch."
Despite Payne copying his hair, Bieber is thrilled to be working with the group, which also includes Niall Horan, Harry Styles, Louis Tomlinson and Zayn Malik, on their eagerly awaited second album.
"The One Direction guys are great. We have a lot of fun whenever we hang out. They came over my house and we were just chilling out around the pool and listening to music," he added.