Designer jeans are cut with a specific rise in mind, so decide if you prefer high-waisted, mid-rise, or a slightly dropped fit first. At the waist, you want a secure hold without gaping at the back; at the hip, the fabric should skim rather than strain. If you’re between sizes, size up for rigid denim with little stretch and down for softer, more flexible weaves. Always check the product notes for guidance on whether a particular style runs tight or relaxed through the seat.