Back in the 2000's, this shot of Theresa Correa in American Curves magazine was my favorite. That sling bikini going up her butt, spread legs, arms up, the breasts seen from back. Lots of fapping happened.
Last week a pic of Divini Rae (Playboy Playmate and softcore Cinemax star) got posted here, but it was a frontal shot that didn't show her magnificent ass. (2003)