Bath Wings?

When Lilly was a baby she would run to bath stark naked with her arms flying behind her like crazy wings. Not straight out wings, but behind her wings like an angel. Tom and I loved it. It is hilarious and cute. She stopped awhile back so we havent seen bath wings for at least a year UNTIL Ella started doing it. What makes our babies decide to take flight when they are headed for bath naked as the day is born? I will never know, but it does beg the question..will Lucy have wings?