Alder Shirtdress 13001 by Grainline Studio Sizes: 0-18. Alder is a loosely fitted, sleeveless shirtdress with two options. View A falls into an A-Line below the bust and features a curved hem, bust darts, and two breast pockets. View B features the same bodice as View A but with a gathered skirt at the sides and back of the dress. Difficulty: Intermediate GS13001