The Essentiel Antwerp Hilver Blouse is crafted from crisp cotton-poplin with a pointed collar and classic cuffs, featuring a relaxed silhouette and a button placket adorned with rhinestone and beaded embellishments. The Essentiel Antwerp Hilver Blouse is crafted from crisp cotton-poplin with a pointed collar and classic cuffs, featuring a relaxed silhouette and a button placket adorned with rhinestone and beaded embellishments. After launching a successful T-shirt collection that quickly took over their apartment, husband-and-wife designers Esfan Eghtessadi and Inge Onsea opened their first boutique in Antwerp, Belgium in 2000. Today, Essentiel Antwerp is a complete ready-to-wear line marked by playful prints, pop colors, and spot-on detailing.