Cotton duvet cover; European size!

Moved with us when we immigrated to the US from the Netherlands. This Dutch/Belgian all female music group is very famous. Their music is very catchy and my daughter has a lot of fun when she was younger. Time to move onto 'big girl' items. Google K3 Alle kleuren https://youtu.be/ZRMTC9Tzj2c Size is 70"x35"; a bit smaller than a twin!