The final "courtesan" dress in Gigi is just spectacular. It's way too simplistic for the era, but it fits the character, which is more important, in the end. Plus, I adore the half moon hair pin (which you unfortunately can't see in this publicity photo).
Aunt Alicia: Love, my dear Gigi, is a thing of beauty like a work of art, and like a work of art it is created by artists. The greater the artist the greater the art. And what makes an artist? Gigi: Cigars and jewelry? Aunt Alicia: Gigi, you're from another planet.