 Betty Comden (qv) was hired to play Garbo at the end of the film  because the producers were sure that the real Garbo either could not  be located or would flatly turn them down. They did try however, a  known associate of Greta Garbo (qv) was located he was asked to  ask the great actress if she would appear in the film but the  associate never responded back. That is Comden we see in the film.