denim formal dress Talissa A-Line Maxi Blue Sunset Dreams: Strapless Gradient Denim

You can opt for something a little more robust, like Zac Efron wears, pictured above

If she dreams of more than this provincial life, she'll love this version of Belle's blue dress from 2017's live action Beauty and the Beast

Create this same effect by using complementary, shadowy colors, but be sure to use colors that are all very close to that grayish-blue tone that is somewhere in the middle of all high-to-low light complementary color scales

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