Smock Dresses M&S Tunic Style Smock Dress Simply Be Mabel Classic Smock Dress Smock Dresses at M&S Smock Dresses M&S. A timeless piece from our Classic Smockwear collection. The Mabel Classic Smock Dress is crafted from soft linen fabric and features delicate hand smocked detailing across the chest in pastel threads. With its flutter sleeves and gathered silhouette, its designed for gentle comfort and grace, perfect for special days and quiet moments alike. Size Chart Chest (inches) Length (inches) 6mo 18 15. 5 12mo 19 16. 5 18mo 20 17. 5 24mo 21 19. 5 3 Year 22 21. 5 4 Year 22. 5 23. 5 5 Year 23. 5 25. 5 Processing Time: All smock dresses are handmade in house specifically for you and will be ready to ship in 7 to 15 working days. #supporthandmade