|Jo Morrow||Princess Ann|
|Jack Jones||Riff Manton|
|Brian Donlevy||George Manton|
|Karin Booth||Leslie Anders|
|Marjorie Reynolds||Martha Manton|
|Frieda Inescort||Aunt Margaret|
|Edgar Barrier||Ambassador Truex|
Ever the iconoclast, European princess Ann chooses New York City over Paris to shop for her coronation attire. Despite the watchful eye of her prudish Aunt Margaret, Ann sneaks away to hear some rock music and meets hunky singer Riff Manton . Over the course of a few nights, Riff introduces her to the city's hot spots while simultaneously scheming to sell her on his friend's clothing designs and persuade her to bankroll a Broadway show.