- 100% Silk - Crystals - Printed Silk - Contrast Border Our Sweet Sacre Bleu Printed Silk Twill Square Scarf is a luxurious layering piece. With hand-rolled edges and a contrast border, it is a timeless canvas of colour and craft, designed to drape, tie, or transform for effortless styling. Inspired by the ornate interiors of Le Train Bleu, in the print a deep blue landscape is overlaid by gilded Belle Epoque detailing.