This image is a reblog from this 21 June 2015 post at Infernal Wonders. It’s a crop from the January 1958 cover of Science Fiction Adventures.
According to the Internet Speculative Fiction Database the cover is the work of American illustrator John Schoenherr (1935-2010), who is famous for, among other things, providing the original cover illustration to Frank Herbert’s Dune.
I just hope the guy with the tentacles remembers the safe word. She’s cute, but it looks like she wants to play rough.