Hmmm, Mustard Pie does not run small, that’s for sure. My very tall 3 year Ellie, who now wears size 4 in most of the brands, is almost drowning in this size 4 Noel dress from Fall 2015 collection. But after her Jolie Maxi dress she wants all her dresses to be long, so this one works. Her matching Colette Headband is from the same collection. Shoes are Livie and Luca Cloves.