Bikini day is the anniversary of the invention of the bikini in 1946 by a parisian fashion mogul,Louis Reard. This holiday is celebrated by going to the nearest beach or pool,alternatively you could try and find some cheap holiday deal to places like Jamaica,Haiti,Barbados,Hawaii or anywhere with lots of beach,soak up the sun and spend your day in a Bikini!
Named after the bikini atoll the two piece made its debut in paris. French designer louis reard wanted to name bits of revealing fabrics,or something close to that;Bikinis were not officially accepted in certain parts of the world because of its revealing style compare to the one piece,that was more uniformed and conservative. But by the time of 1960s the two piece was everywhere.