A simple look from Dakota here in a little black strapless Marc Jacobs dress, dark brown suede YSL platform pumps and a gold necklace from Tiffany's Key collection.
Dakota's Crown Key Necklace is on-line at tiffanys.com; you can also get the look for less with W.A.T's Sparkling CZ Key Pendant, costing £15.27 on-line.
Pics from dakota-fanning.org