This thesis is a report of the practical aspects and the problems of classification and documentation of a collection of memorabilias from the Crown Princess Couple's Wedding in Stockholm 2010. The collection contains 38 objects collected by Nordiska museet [The Nordic Museum], Sweden's largest museum of cultural history. Nordiska museet has a total collection of over 1,5 million items collected since 1873. My ambition in this thesis has been to describe my work with the classification and documentation of these new objects and their context. One of the main problems was how to combine the modern objects with the old existing collection within the two classification systems used at the museum. Four case studies were made toillustratethe different types ofproblems that occurred and the solutions found.I have also highlightedthe importance of being coherent when working with documentation and some of the consequences of classification.