Many of my frends over 40 have opted for marrige in registry office. The purprose is to crate an outfit that is breezy and celebratory , ideally dressier. Flowy, wide-leg pants or skirt in a silky or chiffon fabric aregorgeous varied option to a dress. Mix tailored and relaxed. Think about Grace Kelly, elegant, ladylake, feminime. This style should reflect the momentousness event and should make you feel fab.