Marion Davis was the long-term girlfriend to the newspaper publisher, William Randolph Hearst. She was a MGM actress under contract, and the consummate hostess.
Whether she spent time at Hearst Castle up in Cambria, CA or at her beach house in Santa Monica, she was always up for a making the party fun, and making merry.
Her house was built in the 1930's and has a spectacular view of the water. What remains is the guest house, which is where they were celebrating her birthday. Lots of people dressed up to fit the era, so it was a very fun occasion.
Even a friend of Marion's showed up, a Miss Carlisle, also of MGM fame. She was just a few weeks away from her 100th birthday.