Then in the '70s, while at a trade fair, the duo met Yves Saint Laurent, who commissioned Castañer to create him a pair of wedge espadrilles. Ever since then, the brand has been making these shoes for fashion houses, including the likes of Christian Dior, Armani, Louis Vuitton, Lanvin, Hermès, and Christian Louboutin. The flat version is still one of the brand's more popular styles to date (by 2010, it had sold over eight million pairs), but the wedge styles have proved very popular, with various celebrities and influencers regularly spotted wearing them. Keep scrolling to see the varied styles of espadrilles, how to style them, and then shop them. Trust us—you'll never throw them out of your wardrobe.