- 100% Silk - V Neckline - Maxi Length - Fit And Flare - Regular Fit - Shaped Waistline - Flared Sleeve - Unlined - Button Fastening - Shirred Elasticated Back - Crystal Embellishment The Sweet Sacre Bleu Shaped Waistband Dress With Ruffle Sleeve has a fit-and-flare silhouette with a flattering decollete that celebrates the feminine form. A shirred back waist ensures a flawless fit. Inspired by the ornate interiors of Le Train Bleu, in the print a deep blue landscape is overlaid by gilded Belle Epoque detailing.