thumb|A vintage aloha shirt, circa 1960
The aloha shirt (), also referred to as a Hawaiian shirt, is a style of dress shirt originating in Hawaii. They are collared and buttoned dress shirts, usually short-sleeved and made from printed fabric. They are traditionally worn untucked, but can be worn tucked into the waist of trousers. They are worn casually or as informal business attire in Hawaii.
"Aloha Friday", or Casual Friday, a now-common tradition of celebrating the end of the work week by wearing more casual attire on Fridays, initially grew out of an effort to promote aloha shirts.
Design
Aloha dress shirts are printed, mostly short-sleeved, and collared. They almost always have buttons, sometimes for the entire length of the shirt or at least up to the chest. They usually have a left chest pocket sewn in, often with attention to ensure the printed pattern remains continuous. Aloha shirts may be worn by men or women. Women's aloha shirts usually have a lower-cut, v-neck style.
The lower hems are straight,
It has been observed that locals (kamaʻāina) tended to shy away from the garishness of aloha shirts as "too wild" when they first appeared,