Guy Fieri is opening up about his "JustaGuy" transformation. Fieri, 58, told People, "If you're going to go big, go big." He shocked fans on January 22, sharing a new look for his 58th birthday on Instagram. He shaved his goatee and swapped his spiky blonde hair for a sleek brunette look, wearing a blue gingham button-up, brown belt and khakis. A spokesperson said the birthday post was not AI and used high-end post-production visual effects.