Ms. Delafosse encourages women to look for cuts that flatter their body types.

WSJ: Choosing a Fashionably Flattering Swimsuit

Often, Ms. Delafosse likes to pick swimwear that goes against the trends.

WSJ: Choosing a Fashionably Flattering Swimsuit

In this season's Eres line, Ms. Delafosse did several pieces in rich shades like violet, gold, deep-reddish oranges and chocolate, inspired by reading she'd done on the jewelry and culture of Egypt, Morocco and Syria.

WSJ: Choosing a Fashionably Flattering Swimsuit