By this point sporting costumes is so properly mounted from CCosgames's blog

Seventeen years after he wore the first gown to the primary Worldcon, Forrest Ackerman returns to the convention to record for Fantastic Universe.   Cosplay Costume

By this point sporting costumes is so properly mounted that, he writes, “Monsters, mutants, scientists, spacemen, extraterrestrial beings, and diverse ‘Things’ thronged the ballroom floor as the flashbulbs popped.”   Spider Man Costume

Ackerman also reports that Olga Ley, wife of author Willy Ley, “received for the Most Beautiful dress.” According to Resnick, Ley was “the first super costumer.”