1960s Vintage Hawaiian Button Up Shirt

1960s vintage Hawaiian button up shirt, off white with bright neon pink, orange, and green tropical floral print. One very cool button is still there but the others have come off at some point (I've only owned this for a year and bought it like this!). I haven't found any cool vintage buttons that suit it yet and have kept looking on Hawaii trips. Thick cotton material. Bust measures 21 inches laying flat, shirt length from shoulder to hem is 25 inches. Cat friendly, nonsmoking home.