For a 10-day trip, the ideal number of shirts is typically six to seven, assuming you are willing to do a small amount of "sink laundry" or re-wear items. The "Rule of Three" is a popular minimalist strategy: wear one, pack one, and have one drying. However, for most travelers, a "5-4-3-2-1" packing method works best, which would suggest five tops. If you are traveling to a hot climate where you might sweat through clothes, you might want one fresh shirt per day, but that significantly increases luggage bulk. In 2026, many savvy travelers opt for merino wool or high-tech synthetic fabrics that are naturally odor-resistant and quick-drying, allowing a single shirt to be worn for two or three days without smelling. A versatile wardrobe should include a mix of basic tees, one "nice" button-down or blouse for dinners, and a lightweight long-sleeve layer for sun protection or chilly evenings. By choosing a cohesive color palette where every shirt matches your trousers or skirts, you can create ten different "looks" from just a handful of garments.