Beautiful Open Back Maxi Dress

Beautiful dark blue with white floral print, front slit. Stretchy waist. Open back, ties at mid back. Buttons for neck. From is open all the way down, with a peak a boo opening, but comes all the way to the neck, still modest. See picture. Great condition. Never worn. Cannot find size tag, but it is a medium. 16" pit to pit. Kept in smoke free home.