The buyer bears responsibility for its use
Over-accessorizing: Fix: Stick to the rule of three. Choose three main accessories (e.g., hat, necklace, gloves)
DETAILS 95% Cotton, 5% Spandex
The History and Origin of the A-Line Dress The A-line silhouette gained prominence in the 1950s, following the highly structured postwar New Look era
After reading all about the fabric boutiques one could conclude that this was one such dress, but given that it was extremely well made, I highly doubt it was a make it yourself dress and that it was indeed a YSL couture piece or it was made for a customer by a high end dressmaker following the YSL pattern, using the YSL fabric
As a starting point, its good to settle with options that make you feel comfortable and confident