Women's Michael Kors Dress Size XS but measures as a M/L

This is a pre-owned Michael Kors dress, size XS. Although the tag says XS; Laying flat the PTP measures 20" and the overall length measures 34". The dress features a vibrant orange, pink, and white swirl pattern. It has a smocked high neckline and long sleeves with elastic cuffs. The dress is tiered with decorative ladder trim. The material is 100% cotton. There are no visible stains or tears. The dress is in good, pre-owned condition.