The Sir the Label Blanche Asymmetrical Gown in Black Made from a thick linen, this dress is the perfect dress to dress up or down this spring summer. Features a one shoulder and Cut Out Dresses White, Black, Print & Floral SIR. SIR. Willa Lace trimmed Cutout Silk Maxi Dress in White Lyst Sir Blanche Cut Out Dress in Bone Coco & Lola Sir The Label Blanche Asymmetrical Gown in Black Rent a Dress Cut Out Dress Mini & Maxi Styles in White, Black & More SIR SIR.