- 82% Regenerated Polyamide, 18% Elastane - Fits D Cup - Regular Leg Line And Bottom Coverage - Moulded And Underwire Support - Scoop Back - Adjustable Straps - Crystal Embellishment Designed with a flattering regular legline and bottom coverage, the Sweet Sacre Bleu Sweetheart Neck Underwire One Piece features a flattering decollete and scoop back, with moulded support and adjustable straps for 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.