VANITAS of California Tunic Blue Dress Size with accessorized buttons

VANITAS of California Tunic Silk Crepe Multi Blue Pocket Dress with accessorized buttons Doesn't show a size but seems like a medium to me Two pockets Materials: 100% silk crepe de chine Still in great conditions One of the sleeves button seems to have been replaced since one is bigger than the other *please see pic*. Estimate length: measured on flat surface is 35" inches