Willie NelsonIt's being called the "Haircut Heard Around the World," and for many fans it's a shock to the system: Willie Nelson. Cut. His. Hair.

The country legend has rocked his signature waist-long red hair -- usually in pigtails -- for decades, but while spending time in sunny Hawaii, Nelson decided it was time to chop it off. His rep, Elaine Schock, said Nelson took the plunge sometime in the past two weeks.