Is a size 26 waist equal to a size 3?

No, a size 26 waist is typically not equal to a size 3. In women's clothing, sizes can vary significantly between brands, but generally, a size 3 corresponds to a waist measurement of around 24-25 inches. A size 26 waist would usually fall into a larger size category, often around a size 12 or 14, depending on the brand and fit. Always check size charts for specific measurements.