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1946: The atomic origins of the bikini
On this day in 1946, a French designer unveiled a bombastic (or bombtastic?) new swimsuit and named it the bikini, after Bikini atoll in the Marshall Islands, the site of recent U.S. nuclear testing. While the bathing suit was considered scandalous at the time—it was just 30 square inches of fabric—it has since become an exploration of one’s agency, expression, and relationship with one’s body. As fashion icon Diana Vreeland said, “The bikini is the most important thing since the atom bomb.”
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July 5, 1946: An atomic-age publicity stunt helped create one of history's most revolutionary swimsuits
AFP/Getty Images; Photo Illustration EncyclopĂŠdia Britannica, Inc.
Featured Event
Twenty-sixth Amendment
NARA
Twenty-sixth Amendment certified
Certified this day in 1971, the Twenty-sixth Amendment to the U.S. Constitution lowered the age of eligibility to vote to 18. [Find out what the voting age is in every country in the world.]
Featured Biography
Featured Biography
Library of Congress, Washington, D.C.

P.T. Barnum, born this day in 1810, was an American showman who built his fame on outrageous stunts, the exploitation of “human curiosities,” and brazen deceit. He also, with James A. Bailey, made the American circus a popular and gigantic spectacle.

Famous Birthdays
1979
Amélie Mauresmo
French tennis player
1940
Chuck Close
American artist
1904
Ernst Mayr
American biologist
1805
Robert Fitzroy
British scientist
MORE BIRTHDAYS

More on July 5

British Prime Minister Keir Starmer
© Henry Nicholls—AFP/Getty Images
2024
Keir Starmer, leader of the Labour Party, became prime minister of the United Kingdom, ending 14 years of Conservative rule; he replaced Rishi Sunak. [What’s the difference between a prime minister and a president?]
France's biggest rock star
© Bernard Bisson—Sygma/Getty Images
2017
French rock icon Johnny Hallyday made his last appearance onstage, at a concert in Carcassonne.
Roger Federer
Nick Laham—Getty Images Sport/Thinkstock
2009
Swiss tennis player Roger Federer won a record-setting 15th Grand Slam singles title as he defeated Andy Roddick at the Wimbledon Championships. [Take our quiz about Wimbledon.]
Dolly the sheep
© John Chadwick—AP/REX/Shutterstock.com
1996
Dolly, a female Finn Dorset sheep, was born near Edinburgh, becoming the first successfully cloned mammal; her birth was not publicly revealed until the following year.
Seinfeld
© Castle Rock Entertainment; all rights reserved
1989
The first episode of the sitcom Seinfeld (then called The Seinfeld Chronicles) aired on NBC. It went on to became a landmark of American popular culture. [How much do you know about Seinfeld?]
A history-making win
© Focus on Sport/Getty Images
1975
Arthur Ashe defeated Jimmy Connors in four sets of tennis at the 89th Wimbledon Championships. [Test your knowledge of tennis.]
Algeria
EncyclopĂŠdia Britannica, Inc.
1962
Algeria officially gained its independence from France, which had declared the African country independent two days earlier. [Read more stories of independence in Africa.]
Western Wall and Dome of the Rock
Photos.com/Jupiterimages
1950
Israel’s Knesset passed the Law of Return, which granted Jews the freedom to immigrate to Israel and receive immediate citizenship.
Elvis Presley, 1956
Picture Lux/The Hollywood Archive/Alamy
1954
American singer Elvis Presley recorded That’s All Right, which became his first hit and helped give rise to rock and roll music. [How much do you know about rock and roll music?]
The debut of the bikini
© AFP/Getty Images
1946
The first bikini, designed by French engineer Louis RĂ©ard, made its debut in Paris; the swimsuit was named for the Bikini atoll, which, just days earlier, had been the site of the world’s first peacetime atomic-weapons test. [Can you name these historical fashion trends?]
Secret Service agents escorting U.S. Pres. Theodore Roosevelt
Library of Congress, Washington, D.C.
Midway Atoll National Wildlife Refuge
MCS 2nd Class Mark Logico/U.S. Navy
1859
Captain N.C. Brooks discovered the Midway Islands in the central Pacific Ocean and claimed the territory for the United States. [Take our islands quiz.]