Call Me Madam (1953)

Ethel Merman, Vera-Ellen, and Donald O'Connor star in this musical from 1953. Ethel Merman plays a Washington socialite who has just been appointed as the American ambassador to Lichtenburg, a tiny, fictional European nation. While there, she becomes involved in the budding romance between her assistant (O'Connor) and the princess (Vera-Ellen), disrupting the country's politics and endangering not only her job, but also a possible romance of her own. It's a fun movie, and I especially liked the song It's a Lovely Day Today. Incidentally, the composer, Alfred Newman, won an Academy Award for Best Scoring of a Musical Picture for this film, and Merman won a Golden Globe award for Best Actress in a Musical or Comedy. (Opinions by me, things purporting to be facts from Wikipedia.)