These are American sizes - which should be made clear on the items which are not UK sized and a conversion table would be useful to prevent you from getting a load of returns. I phoned to double-check before ordering as I already own another Sherpa skort. the lady was helpful and promised to give my feedback to the marketing/webmaster department to ensure correct information is displayed. I have given you 4 and not 5 - because I have just checked the website and my feedback about sizing has not materialised on the webpage for this item. why not? The skirt is great - light material so good for summer walking. 45cm length.