Apparently these two lovely lassies are a pair of Mack Sennett Bathing Beauties. It looks like the Hollywoodland sign is still being built or just finished (which would make this photo from 1923) so this is probably a publicity stunt. Oh, the things a pretty girl has to do to get attention in this town.
I wonder if these are the same gals. I’m not sure the hats match.