I dont know if zero wears one or not— its odd for a single baby to wear one, unless there is a twin and you need it to tell them apart..
What, like little girls can’t dress up to have their picture taken? I still have my little girl bracelets and necklaces and some of them show up in pictures of when I was little and I wasn’t a twin. At no where along the way has anyone ever suggested Anne was a twin.