Mon Cheri - 215919SC Knotted Embellished Sheath Evening GownPlease refer to Montage. The Ivonne D Collection Size Chart. An illusion bateau neckline and quarter length sleeves frame the fitted bodice over a distinct sweetheart lining, complemented with a sheer keyhole back. The waist is highlighted with a crisscross ruched band with knot detail and gives way to the full length sheath skirt which finishes with a sweep train.