Where: The premiere of the third season of AMC's The Walking Dead in Universal City, CA.
When: October 4
What: A chamomile embroidered silk organza dress by RED Valentino.
Why: Yes, the 12 year-old actress is wearing an adult dress. But the sweet embroidery, clean styling and fresh hair and makeup render it utterly age-appropriate (price tag notwithstanding).
Click here to see Kiernan Shipka and more on W's Best Dressed list.
Photo: Getty Images