If you’ve ever felt frustrated in a fitting room this is due to “vanity sizing,” . When clothes run larger in actual measurements than their tag implies, it’s often called “vanity sizing,” since a shopper can feel like their body is smaller than it may actually be. But sizing data collected by thredUP shows that vanity sizing may not be intentional—overall, brands are just as likely to undersize clothing as they are to oversize.

Forget the number on the label! These 31 women talk about how confusing and inconsistent sizes across brands can lead to frustration.