I love Isabella Lily Juliana. It's such a pretty combination and all names sound quite dreamy together. Out of personal preference I find Isabella a bit boring (it's been so overdone in my country and there was a very unpleasant Isabella at my primary school, and thanks to her the name is kind of ruined for me), but in Isabella van Vollenhoven's combination, it sounds wonderful. I also like Catharina-Amalia Beatrix Carmen Victoria, what a beautiful name.
I also love the names of the Princesses of Bourbon-Parma: Luisa and Cecilia. I don't like their middle names but their first names are so pretty. I also like Alaïa-Maria and Julia Carolina Catharina from this family. I love how exotic and unusual Alaïa-Maria looks.
The Dutch Royals seem to be fans of hyphens. King Willem-Alexander, Princess Catharina-Amalia, Count Claus-Casimir and Alaïa-Maria all have hyphenated names.