The usually platinum blond actor decided to ditch his longer and lighter locks now that "Glee" is on summer hiatus.
"At the end of the season, I just wanted a haircut, so I cut it all off," Overstreet told Us Weekly. "I cut the highlights out."
No word on whether or not he'll go back to blond for next season.
The "Glee" cast is busy preparing for their upcoming summer tour, which kicks off May 21 in Las Vegas, but right now Overstreet is excited for the season finale of the hit Fox show.
"There's a death at school," he said. "We do two original songs at Nationals. It'll be fun."
Just last month the "Glee" cast hit the Big Apple to film scenes for the finale, which brings the McKinley High kids to New York City for a national competition.
Click here to see fellow "Glee" star Dianna Agron's new messy bob.