Custom-designed dress shirts and vintage formal apparel for men and women in downtown San Diego, Boutique De Marcus curates a limited-production inventory from its Second Avenue storefront near the Gaslamp Quarter. The in-house label produces cotton dress shirts cut to proprietary patterns in small-batch runs, creating exclusive designs with the same commission-to-client exclusivity practiced by Harold Stevens Jewelers in the Gaslamp Quarter. Established in 2007, the boutique shares its Second Avenue and G Street space with Salon De Marcus, integrating apparel retail and full-service salon operations under a single entrance. The vintage wing rotates through curated gowns, costume pieces, and retro formalwear alongside contemporary blazers and trousers. Event-driven wardrobing for wedding parties, galas, and San Diego Convention Center appearances drives the store's appointment-based fitting service, building multi-piece ensembles in the same pre-event preparation format used by Luxury Barber Lounge for grooming. The custom shirt program specifies cotton broadcloth in limited colorways, with each design produced in runs small enough to prevent duplicate sightings at the same venue.