I try on four pairs of pants to show how inconsistent sizing can be. Depending on the brand and cut, I wear anywhere from a size 20 to 26.
Even within the same size, jeans fit differently. Sometimes, the difference is in the fabric and stretch.
The first pair (size 24) had medium stretch, while the second (pink, size 24) was very stretchy. The third (light wash, size 22) had low stretch, making it fit tighter.
The last pair (bootcut, size 20) had medium stretch but still fit differently. Sizing is unpredictable, and this proves it!