New with tags This is a size 2 which based on Karen Millen website it also fits like an extra small. Make this tailored dress your new after-dark uniform. Precisely cut to ensure the best fit, it features a high buttoned neck, cap sleeves and pleating detail at the hem. Pleated hemline Cap sleeves High neckline Size 2-XS All measurements taken flat Pit to pit 15" Waist 13" Length 35"