This is a summer dress from the French brand Tartine et Chocolat (タルティーヌ　エ　ショコラ). It looks very cool and cute. It has a navy base with a floral pattern. Size: 140 Purchased a few years ago. I think it was around 25,000 yen, but I don't remember exactly. I've only worn it a few times, so I think it's in good condition.