Sézane Lianne dress

I have loved this dress but it’s small on me now. Timeless fit, always got so many compliments! Care tag is faded (probably from washing) but still has extra button attached. Great condition! I always washed on delicate and then let it air dry and it has held up incredibly well. Size 34. Measurements in pictures. Pit to pit is about 16”. Length down the middle is about 32”. Gonna list as a S but please refer to measurements.