Ellen Weldon has been creating lavish invitations for New York weddings for close to three decades. And does she know what she’s doing? Let’s put it this way: Estée Lauder was her first client. A specialist in the art of calligraphy, Weldon offers different styles, ranging from the more printed-looking type that is straight caps to the dramatic swirling font that is Venetian. Be sure to allow at least three months, especially if your heart is set on one of Weldon’s custom monograms for the invitations.