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No favorite names yet.
I'm a currently pregnant name-nerd, and many of my favorites are short. Nina, Laura, Eve, Ann, Kara, Jane. But my husband only seems to like girls' names with three or more syllables, though he admits they're a mouthful for every day use. More elegant, more feminine, more exotic and sophisticated, he thinks. So we probably will be an example of this trend -- we'll pick one of his three or four syllable names for the birth certificate, and one of my one or two syllable names with some similar sounds as a "nickname," though really it would probably be a perfectly good independent name in its own right.
But that is one of the other things this trend has going for it. By giving a formal name and a nickname, you make it easier for parents who have very different tastes to compromise. (That's why middle names exist at all, right?)