If in Doubt, Ask Your Photographer!
It's important to let your photographer be a part of the whole process with you. Let them get excited with you and help plan your vision. When they know what you are wearing and understand the feel you are going for (casual, fun, formal, etc.), it will make the picture come together beautifully. It's important to pick a photographer whose style you like. Each photographer has a different style.
When you can match that that style with your own, you will love the outcome.