What should we wear?

My goal is always to photograph people being themselves, so I usually tell people to wear something that they feels represents them and is comfortable. Sometimes people will want a formal or a casual look, and either one is just fine - it is completely up to you. I do recommend avoiding shirts with images or logos, as these can often be distracting (unless it is significant in some way). Also, it is certainly not necessary for the people in the shoot to match with one another, however it is best if the colors/tones/patterns do not contrast too much.