February 2011: The cut that rocked the world…Bieber took to Twitter one fateful February morning to tease a change was coming, writing, "thinking about getting a haircut....hmmmmmm." Spoiler alert: he did it.

"yeah so it's true...i got a lil haircut...i like it...and we are giving all the hair cut to CHARITY to auction," he wrote. "Details coming soon."

Ellen DeGeneres ended up auctioning off a lock of his hair for $40,668, which went to an animal rights organization.

Of the fan response to the cut, Bieber told Ellen: "I was inspired by yours!" He then said, "Yeah [people were freaking out], but I was like, 'I don't really care.'"