I don't know if there exists a cafe with a "sibling theme", but café con piernas is pretty similar in the other respects. There are a variety of different establishments where clientele are served coffee and pastries by women in revealing outfits, ranging from traditional outfits in short-skirts, to much more revealing costumes (often with partial nudity). All I was saying is that businesses that follow the model of "cafe, but also sex work" are world-wide, not just Japan and the US.