To Bow or Not To Bow

On the left is Queen Silvia of Sweden – seriously – she and King Carl, to her right, were visting Italian President Napolitano and his wife Clio the other day in Rome. Anyway, on the right is Blair Waldorf from Gossip Girl. Notice anything similiar? The bows, right. Sooooo my question, how old is too old to rock a bow headband? Is there or should there be an age limit? Or is it a symbol of social status