It is possible to make a grandfather shirt volume, using the bodice base pattern as your starting point. The volume of the new base is increased considerably to obtain the comfort associated with this kind of loose shirt. This technical file will demonstrate how to undertake the transformation process without difficulty by explaining and illustrating each step in detail for a top quality result characteristic of the dp studio method. For this example, the center front buttoning is constructed by an in-one overlap and facing for the inside finish. Different types of sleeve and collar can be adapted to this shirt. From this base, other transformations are possible. This technical file can be completed by: - The technical file of blouse collars (with collar stand, closed, open…).