Dakota's little sister Elle Fanning is a young lady now! She stunned a bit at the AFI FEST screening of her new film, Ginger and Rosa, at Grauman’s Chinese Theatre in Hollywood on Wednesday in an age-appropriate yet feminine floor-grazing gown from Oscar de la Renta. There is a youthfulness to this look that we really like and the headband really makes the look hers! She looked like a sugary sweet confection! What do you think?