Playboy Bunnies Parade, 60th Anniversary, Los Angeles, California, United States

The Bunny's Tavern usage of the outfit, is considered a variant of Showgirl.
Origin of costume
The costume itself was conceived by Playboy's director of promotions, Victor Lownes, designed by Zelda Wynn Valdes, and subsequently refined by Hugh Hefner. Originally the ears were taller and the ensemble lacked the trademark bow tie, collar, and cuffs. First unveiled publicly in an early episode of Playboy's Penthouse, it made its formal debut at the opening of the first Playboy Club in Chicago on the evening of February 29, 1960.