Callahan Tallulah Dress in Green. - size L (also in XS) Callahan Tallulah Dress in Green. - size L (also in XS) 100% cotton. Hand wash cold. Unlined. Jersey knit fabric. One-shoulder styling with non-slip silicone lining. Exposed side button closure with keyhole accents. Imported. CAHN-WD32. 21917. Los Angeles based brand Callahan is known for their comfy sweaters and perfect boyfriend fits. Their line is elevated by unique textures, materials, and techniques that give each piece versatility and wearability. Designed for cool girls everywhere, Callahan is inspired by effortlessly easy style.