This is probably from early 1943. Oona had already met Chaplin. The man talking in the background is the film's producer, Eugene Frenke. Oona was offered the role of "Tamara" in the film but backed out shortly after her marriage to Chaplin in June. Her role was then given to Mimi Forsythe.* The film was eventually released under the title Three Russian Girls.
Happy birthday, Oona (May 14, 1925)
*Los Angeles Times, July 14, 1943