You should be able to choose your "regular size" in our Happy pants. But all bodies are different so do not forget to check out our size guide first. However, these measurements are very general, so feel free to email us if you want more tailored advice. We strive to be able to choose the same size of all tights you have from aim'n, but some collections may differ. Our fabrics contain elastane and are stretched out, it has a fantastic ability to adapt to your body shape and this can be important to know when choosing a size. With this in mind, we usually recommend that you choose the smaller one if you choose between two. A tip is also to read our unique reviews on each product to get a good idea of whether something is smaller or larger in size.