What is black tie optional wedding guest attire?

Black tie optional gives you a little more freedom than strict black tie, but it still asks for formality. Men can wear a dinner jacket with bow tie, or a very dark lounge suit with a white shirt and a tasteful tie. Women can choose a long evening dress, a dressy jumpsuit, or a sophisticated knee length cocktail dress. The key is to look polished and celebratory, as if you have made an effort for the couple. Avoid casual fabrics like linen or cotton, and skip anything too bright or too plain. Shoes should be formal: polished leather for men, heeled or dressy flats for women. If the invitation says black tie optional, the couple expects most guests to lean towards formal. When in doubt, dress up rather than down. You can check the venue or the couple's wedding website for clues, but a dark suit and a smart dress will always be safe. Remember that the ceremony might be in a church or register office, so bring a cover up if shoulders are bare. The mood is elegant and festive, so enjoy dressing up for the occasion.