EXCLUSIVE AT NET-A-PORTER.COM. Calvin Klein Collection's 'Hannelisa' dress has been cut in Italy from fluid silk-chiffon that effortlessly skims your curves. This vibrant red style is designed in this season's key slip silhouette, complete with slender straps and a slight V-neckline. We like it with sleek heels in the evening or layered over a fresh white T-shirt at the weekend.