The young East Bay native has grown out his 20-inch, curly, lofty mullet ... hair for two generations at Rick’s, was thrilled Mason won. “I’m proud to be Mason’s barber. We’ve been here ...

Since bursting onto the country scene, Shelton’s hair, for better or worse ... singer’s most notable hairdo was the mullet.

Rather than his signature mullet and mustache ... I didn’t like my long hair anymore, so I shaved it off” — an announcement that was met with a combination of cheers and boos.