Credit: Splash News Online

What's the buzz on Adam Levine's new 'do?

The Maroon 5 singer and mentor on The Voice, 33, showed off his newly shorn locks at The Grove in L.A. Tuesday. "I shaved my head," Levine explained via Twitter. "Sometimes it's just necessary, like an emotional reboot. It'll grow back."

Levine isn't the only Hollywood hunk who's shaved his head in 2012. Robert Pattinson, 25, unveiled his cropped cut at the People's Choice Awards in L.A. in January.

The "Moves Like Jagger" singer, who's currently dating supermodel Anne V, is in negotiations to make his acting debut on Season 2 of the FX series American Horror Story (starring Jessica Lange and Zachary Quinto).

Levine would be "playing a contemporary character and half of a couple called 'The Lovers,' Entertainment Weekly reports.

Tell Us: Do you like Adam Levine's new hairstyle?