The Official "Magnum P.I." * "Tom Selleck" Shirt. Perhaps there is not a more well known Hawaiian shirt than the one made famous by Tom Selleck when he starred in the hit television show, Magnum P.I. For 8 seasons, Magnum sported this cool Hawaiian shirt look while chasing down the island bad guys! The original shirt he wore is kept at the Smithsonian. 100% Cotton and made with real bamboo buttons.