This is the Dora Dress from Singapore-based kids design company Cavalier.
"Dora is my mom and the dress is homage to her. She’s a real classic dresser, hence the little black dress, but we believe that everyone has a wild side so we decided to give it a little twist with the rocker hands. On the rear neckline of the dress is an embroidered Mark Twain quote ‘My mother had a great deal of trouble with me but I think she enjoyed it." Angela Chong