The teen donned a black floral crinkle chiffon sleeveless gown with an open back, lace insets, and multi-colored floral motif from the brand’s Resort 2017 Collection. Jackson chose to team the look with a Helorocha gold chain mail clutch which included dangly star and moon pendants which matched her thick band rings and dangly peace sign bracelet.
She also shared her grown-up look on Instagram, captioning a photo "@sofiarichie ur hot."
In the snap Jackson posted, she is featured posing alongside her friend and Lionel Richie's daughter Sophia Richie, who is also 18.