Katy Keene
Katy Keene - Butterfly Ballet Collection
Katy Keene by Bill woggon
Katy Keene paper doll in Laugh Comics #82, August 1957, by Bill Woggon
More vintage 1950s high fashion paper dolls
So, apparently this pinup mermaid is actually Katy Keene, a character from the "Archie" comics. Katy is not usually a mermaid, but a fashionista. "Mermaid" was just one of countless themes Katy modled.
I'm unsure if all of these mermaid images come from one issue of the magazine, or if it was a recurring theme. I'm also unsure how literal this is supposed to be: is Katy just wearing a fake mermaid tail in-universe, or is this a multiverse situation?
Happy First Day of Spring!! Hope you are all doing well! xoxo
"More Katy Keene Fashions" in Suzie Comics #61, February 1948, by Bill Woggon
Katy Keene - KK’s LPs