I get asked a lot: "What should we wear?" for a photo session.
The answer: Rich colors, interesting textures, and layers.
Most importantly - you want to coordinate, NOT match.
And remember, if you feel good in it, you'll look good in it.
I'd be happy to come dig through your closets with you if you can't find anything or are completely indecisive {like me}. What you wear adds and in lots of cases determines the style of the session. It's kind of a big deal. No pressure. =)