No Cake at this pre-wedding ball (well, maybe there was cake, but there was no Cake -- you all get what I'm saying), but at least we've got her parents!  This is the lovely Queen Juliana and her hubs, Prince Bernhard.  The Dutch have a tradition of abdicating the throne when they get older; Juliana took over in 1948 when her mother, Wilhelmina, abdicated, and Beatrix became queen when Juliana abdicated in 1980.  Quite nice that they get a bit of quiet time in their retirement, really.

Juliana's wearing one of the treasures of the Dutch royal jewel collection: the Stuart Diamond Tiara, which includes (as you might expect) the famous Stuart diamond, a pear-shaped stone that was originally bought for Mary II of the UK by her husband, William III (who was born the Prince of Orange in the Netherlands).  Mary was a member of the House of Stuart, hence the diamond's name; but when she died, the diamond was brought back to the Netherlands.

The current tiara setting was made around the turn of the twentieth century for the coronation of Queen Wilhelmina.  She didn't wear it frequently, but Juliana loved the whole set of jewels and wore it very often.  According to the excellent Royal Dutch Jewels site, none of the other royal Dutch women have worn it since Juliana, which is a major shame.  Listen up, Máxima -- grab this one out of the vaults and work your magic!  (The royal Dutch jewels site also has a clearer version of the above picture, plus many more of Juliana et al wearing the tiara.)