A photo of the Masquerade from WorldCon 1961, featuring Stu Hoffman dressed as some kind of alien in the foreground, and Sylvia Dees in some kind of chainmail mini dress in the background. They are surrounded by other people in regular 1961 clothing.

It's Cosplay ThrowBackThursday! Taking the Wayback Machine to WorldCon 1961 (aka SeaCon). Stu Hoffman and Sylvia Dees; photo by Ben Jason. Most cosplay at the time was based on SF/F novels & short stories! #cosplaythrowbackthursday #cosplayhistory #worldcon #1960scosplay #tbt

Photo from WorldCon 1961, featuring editor Forrest J. Ackerman standing behind two young cosplayers with his hands on their shoulders. On the left is Joni Cornell wearing some kind of future bikini over tights, with blonde hair. On the right is a shirtless young man in green facepaint, pants and a long scarf/cape. Absolutely no idea what these people are dressed as.

It's Cosplay #ThrowbackThursday! This week, we visit Seacon aka WorldCon 1961! Joni Cornell, Forry Ackerman and an unknown gentleman. Photo by Ben Jason. #cosplay #tbt #CosplayIsForEveryone #CosplayHistory #WorldCon1961 #benjason #jonicornell #forrestjackerman #seacon #sexycosplaywasalwaysathing

Sandy Knott dressed as a "Phoenix Without Ashes", a sparkly white leotard dance costume with feathered headdress and silver boots. From WorldCon 1982's masquerade.

Day 13 of #28DaysOfBlackCosplay2025
is also #CosplayThrowBackThursday! Featuring Sandy Knott as "Phoenix Without Ashes", photo by Debbie King, WorldCon 1982 aka ChiCon 4! #28daysofblackcosplay #CosplayIsForEveryone #poccosplay #throwbackthursday #tbt #worldcon1982 #80scosplay #cosplayhistory

A photo, circa 1999, of an unidentified woman cosplaying as Nadia from the Secret of Blue Water anime. She is descending a hotel staircase and has abs for days. (Back in the old days, you often would never know who a cosplayer was, unless they were already in your friend circle. Keeping in touch after a five-minute interaction at a con was much more unusual in those days.)

Day 6 of #28DaysOfBlackCosplay2025
is also #CosplayThrowBackThursday! Featuring this fantastic Nadia from Secret of Blue Water, photo by Kevin "A Fan's View" Lillard, A-Kon 1999! #28daysofblackcosplay #CosplayIsForEveryone #poccosplay #tbt #secretofbluewater #cosplayhistory #fanhistory #akon1999

Ellie Turner and Karen Anderson in sci-fi babe cosplay at WorldCon 1961. They are standing in a rather dull hotel function room with wood paneling and floor, one is wearing a green gauze and sequins belly dancer-esque ensemble and the other is in a purple vest and loincloth over a flesh-colored leotard.

It's Cosplay #ThrowbackThursday! This week, we visit Seacon aka WorldCon 1961! Ellie Turner & Karen Anderson. Photo by Ben Jason. #cosplay #tbt #CosplayIsForEveryone #CosplayHistory #60sCosplay #WorldCon1961 #seacon #scifi #sff #FandomHistory #WorldCon #sexycosplaywasalwaysathing

From left to right: Sailor Mars in yellow floral kimono, Sailor Jupiter in green floral kimono, Sailor Moon in pink floral kimono, Sailor Mercury in blue floral kimono and Sailor Mars in red floral kimono. All the girls are smiling and very cute.

It's Cosplay #ThrowbackThursday! This week, catching up on some more A-Kon 29 cosplay photos! Super cute kimono Sailor Moon group! #cosplay #tbt #CosplayIsForEveryone #CosplayHistory #FandomHistory #sailormoon #ConLife #conventions #akon29 #akon2018 #CosplayLife #HallCosplay #TexasCosplay #MyPhotos

A black and white photo from Seacon (Worldcon 1961). Two men in costume (alien? ancient Greek?) grasp hands in the foreground, while a third man stands in the background, hand on hip.

It's Cosplay #ThrowbackThursday! This week, we visit Seacon aka WorldCon 1961! Unknown fans at the costume show. Photo by Bill Warren. #cosplay #tbt #CosplayHistory #1960sCosplay #60sCosplay #WorldCon1961 #billwarren #seacon #masquerade #scifi #sff #FandomHistory #WorldCon #fandom

It's Cosplay #ThrowbackThursday! This week, catching up on some more A-Kon 29 hall cosplay photos! Incredible World of Warcraft Tier 6 Absolution Regalia Priest, the whole set had lights! #cosplay #tbt #CosplayIsForEveryone #CosplayHistory #worldofwarcraft #absolutionregalia #akon2018 #HallCosplay

Dick and Pat Lupoff dressed as Captain Marvel and Mary Marvel, at WorldCon 1960.

It's Cosplay #ThrowbackThursday! This week, we visit Pittcon aka WorldCon 1960! Dick & Pat Lupoff as Captain & Mary Marvel, from the collection of Mike Resnick. Photo by Charles N. Brown. #cosplay #tbt #CosplayHistory #60sCosplay #WorldCon1960 #dicklupoff #patlupoff #charlesnbrown #FandomHistory

For Day 1 of #29DaysofBlackCosplay2024, it's Cosplay #ThrowbackThursday! LA Con IV aka WorldCon 2006! A lovely unidentified lady cosplayed as Guinan. Photo by Kay Shapero. #cosplay #tbt #28daysofblackcosplay #CosplayIsForEveryone #CosplayHistory #WorldCon2006 #startrekcosplay #lacon4 #FandomHistory