Allegra K Denim Dress for Women's A-Line Button Down Collared Short Sleeve Casual Midi Jean Shirt Dresses The A-line silhouette flatters your figure, while the button-up front and collared neckline add a touch of sophistication to the casual denim fabric. With short rolled-up sleeves for added breathability, this dress is ideal for everyday wear or casual outings. Size: M. Color: Blue. Gender: female. Age Group: adult.