Check out Ivan Regen's haircuts throughout his career:
Ivan Regen had various haircuts during his lifetime. He was most recognized as a talented biologist and entomologist. However, the Slovenian biologist was mostly known for his beautiful fashion sense and his livable character. Before his tragic demise at the age of 79 he was repeatedly in the spotlight of the press due to his exceptionally hair and looks. Check out Ivan Regen's former and current looks right here: