Justin Bieber's Hair Evolution From Bowl Cut to Dreads

The singer showed off his new locks over the weekend.

The singer burst onto the music scene with his memorable blond bowl cut and since then, the Canadian has fascinated us with different colors, styles and trends.

His latest? Bieber, 22, now has dreadlocks. He captioned the photo, "Why."

It's not the first time Bieber's hair has captivated our attention. Here's a look back at some of Bieber's most memorable 'dos: