No it's not sub-style of gothic culture. I just played with the words "polka dots" and "goths" :P
What do you think of polka dots? I think it's an amazing pattern. It's a vintage evergreen! Can be both casual and elegant. I believe there's a polka dot dress in every girl's closet, goth girls included! :)
"During the 1940's and '50s, the polka dot graced the gowns of female celebrities from Marilyn Monroe to Elizabeth Taylor, during the same time period Christian Dior began to release his notable hourglass dresses in spotted prints. The polka dot dress became a staple for Lucille Ball's wardrobe in I Love Lucy. Gaining global recognition, the polka dot has not looked back towards it's troubled past. Time has only brought continuous success to the polka dot!" (info taken from flaunt.com)
Lucille Ball in I Love Lucy, 1951-1960
Louise Dahl-Wolfe photographed Marry Jane Russell, wearing Christian Dior.