Today sees King Carl Gustaf's Golden Jubilee celebration take place in Stockholm, with attendees including Crown Princess Victoria and Princess Sofia of Sweden looking sensational for the milestone occasion.
The event is all the more special for King Carl, as he becomes the first monarch in the country's history to celebrate a Golden Jubilee - plus, he is currently the second longest-reigning living monarch in Europe.
Friday sees a church service take place at the Royal Palace, followed by a televised speech from King Carl Gustaf, while Thursday's agenda included an opera performance at Drottningholm Palace outside Stockholm followed by a private dinner.
Read on for all the best-dressed European royals attending the special occasion.
Stand by for more photos as they land, and in the meantime, brush up on your European royals below...