This granny square midi dress pattern is clear made for a beginner. You will get step-by-step written descriptions, 3 charts and 4 diagrams for each listed plus size.

Yarn: Drops Sarah by Gamstudio 328 yd(159m) 50gr. You can use another yarn with the similar yardage;
500g for sizes XS / S ,
650g for sizes M / L / XL,
730g for sizes XXL / 3XL / 4XL,
1100g for sizes 5XL /6XL / 7XL

Crochet hook:
either size US0 - 2 mm or US 1 1/2 - 2.5 mm or US2 -2.75 mm

This sexy long sleeve dress pattern is suitable for plus size women who like backless dresses, it very trendy and easy to crochet.