AppleSauce Designs creates one of a kind vintage-inspired clothing for kids by sisters, Elizabeth and Monica Buenrostro. I love The Simone Dress ($50 at AppleSauce's Etsy Shop) for it's beautiful shade of lavender but you could get this dress shape made in a custom order! The same goes for The Siouxie Dress ($52 at AppleSauce's Etsy Shop) pictured below. Just let her know what color scheme you'd like and there's only a two week turn around time.
