from the pics I have seen and guest names, it seems no German royals (former that is) were included, in spite of the bride's grandmother being a German. Were the German families snubbed?
And of course many of her non-royal German relations (the Sommerlaths, her mother's family) were there--including in the wedding party.
As noted before, German royals included:
Prince Manuel and Princess Anna of Bavaria
Princess and Prince of Sayn-Wittgenstein-Berleburg
The Hereditary Prince of Sayn-Wittgenstein-Berleburg
Princess Alexandra of Sayn-Wittgenstein-Berleburg and Count Jefferson von Pfeil und Klein-Ellguth
Princess Nathalie of Sayn-Wittgenstein-Berleburg
H.R.H. Princess Birgitta and H.S.H. Dr Johann Georg, Prince von Hohenzollern
H.S.H. Prince Carl Christian von Hohenzollern and H.S.H. Princess Nicole von Hohenzollern
Mrs Désirée von Bohlen und Halbach and Mr Eckbert von Bohlen und Halbach
H.S.H. Prince Hubertus von Hohenzollern and H.S.H. Princess Ute Maria von Hohenzollern
Princess Désirée, Baroness Silfverschiöld and Baron Niclas Silfverschiöld
S.H. Erbprinz Hubertus von Sachsen- Coburgund Goth and I.H. Prinzessin Kelly von Sachsen- Coburgund Gotha
Complete (and I mean complete!) guest list found here:
http://www.royalcourt.se/royalcourt/wedding/theweddingday/stockholmcathedral/guestsattheweddingceremony.html