This is a Bare Maidens scene. It took me far too long to find after I got more than slightly obsessed with it.
You can’t buy it and the site is half-de*d: you can read about my adventures trying to in a post I wrote:
Who said there can't be erotism in porn? This film is a masterpiece of erotic art! Anyone knows the real name of the film, the producer, etc. Gosh I Just need to have it complete. Thank you so much Jimmytheweed!!
I like this kind of thing, but to me it's less likely to seduce a girl, into a life of lesbian lust, than is one in which a woman entices another into bed with experienced ease, knowing what lies just below the surface, in every female heart.