Looking "expensive" on a cruise in 2026 is less about brand logos and more about "Quiet Luxury" and fabric choice. For sea days, opt for breathable linen sets in neutral tones like oat, navy, or crisp white, which signal a polished but relaxed wealth. Avoid synthetic fabrics that wrinkle easily; instead, choose high-quality cotton or silk blends. On formal or "Dressy" nights, a tailored blazer for men or a sleek, monochromatic slip dress for women paired with minimalist gold jewelry creates a high-end aesthetic without being over-the-top. Footwear is a major indicator: trade rubber flip-flops for leather slides or smart loafers. Accessories are your best tool; a pair of classic oversized sunglasses and a structured straw tote bag instantly elevate a basic swimsuit. Finally, grooming is the ultimate "expensive" secret—neatly styled hair (like soft waves or a slicked bun) and a signature scent help maintain a sophisticated aura even in the humid, tropical environment of the Caribbean or Mediterranean.