And - perhaps in a bid to avoid Megxit round two - royal families from around the world have given their spares more and more to do - even though some of them are still teenagers.
Letizia Ortiz Rocasolano was well-known in her own right before joining the Spanish Royal Family, but not as an aristocrat, let alone as a fellow royal.
Why is Spain s princess doing military service? thelocal.es - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thelocal.es Daily Mail and Mail on Sunday newspapers.