The Gdog Shirt by Essentiel Antwerp *shines* with its sequin-embellished design, complemented by an oversized fit, dropped shoulders, and classic collar. The Gdog Shirt by Essentiel Antwerp *shines* with its sequin-embellished design, complemented by an oversized fit, dropped shoulders, and classic collar. 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.