Rudolph and Natacha attend an “Actor's Fund Benefit” planning meeting, (see below) on Staten Island in January 1923. Natacha is really pushing the envelope with that outfit and what a wall of fur coat.
The gentleman is Daniel Frohman, who was a partner of Adolph Zukor and would produce some 70 films with Famous-Players.
https://en.wikipedia.org/wiki/Daniel_Frohman
The two ladies are:
https://en.wikipedia.org/wiki/Nora_Bayes
https://en.wikipedia.org/wiki/Blanche_Bates
Left to right (above): Frohman, Natacha Rambova, Nora Bayes, Blanche Bates and Valentino. (Below)...the fabulous frocks underneath those coats.