Left to right, front row: Mary Pickford, Joseph Schenck, Douglas Fairbanks. Standing, CC, Darryl Zanuck, and Sam Goldwyn.
Funny how everyone is smiling in the top photo, but frowning in the bottom photo (especially soon-to-be exes Doug & Mary). Ms. Pickford also added a scarf to her ensemble. Charlie looks like he's fresh from a tennis match.