GQ christened Hedi Slimane “The Prince of Darkness” back in 2005 when the designer introduced his first grittily gorgeous men’s collection for Christian Dior. Since then, he’s courted controversy by taking his scissors to the “Yves” in Saint Laurent Paris after being named its creative director last fall. Whether you were horrified or electrified by his audacity, you can’t argue with the results, as evidenced by the newly opened boutique at Highland Park Village. Inside this black-marble temple of cool, you’ll find his sexily stripped-down take on Monsieur Saint Laurent’s many contributions to the fashion world: Le Smoking jackets, menswear suiting, modern denim, sheer caftans and baby-doll dresses. And if that’s not enough to get pulses racing, the open shelves filled with the Nina gladiator sandal, Escarpin pump with ankle cuff, Classic Duffel 12, Sac de Jour and Betty bag may produce a full-on frenzy. We’re particularly mad for his men’s classics — the Chelsea boot, penny loafer, black/white lace-up and army boot — available in women’s sizes. (Shopping tip: Best keep store manager Christi Houser’s digits on speed dial.) The interior, conjured by Slimane himself, is the third such model in the country, and the archetype by which all existing boutiques will be ultimately transformed. And lest you think that shadow gap found throughout the space is merely an interesting architectural detail, you’ll find it repeated in his jewelry collection, most elegantly rendered in the end caps of a cuff. Another sleight of hand: Press lightly against one of the mirrored wall panels and watch it open to reveal an expansive mirrored dressing room that seems designed with an aventure amoureuse in mind. But who has time for that when there’s a tuxedo-front dress with our name written all over it? 29 Highland Park Village, 214.780.0184; ysl.com.