Lily-Rose Depp is one of the smartest celebrity teens in Hollywood, and given the fact that she just blazed her way through Cannes in May, she's only getting bigger. When it really comes down to it, though, the daughter of Vanessa Paradis and Johnny Depp also seems to enjoy being an average teenager. Case in point: Lily recently attended a high school prom in LA. Various Instagram snaps from the evening showed Lily looking gorgeous in a floor-length gown and posing with a group of friends that included filmmaker Kevin Smith's daughter, Harley Quinn. He posted a stunning snap of the pair on Instagram and revealed they both had dates for the big night. Check out more snaps below!