Portraits... Yes to...
Patterns, stripes and Florals can be very distracting from the subjects and your faces.
Very bright clothing can also be distracting unless you want to stand out! Eg. Red dress with a Glamour Shoot is perfect!
Wear colours that go nicely together for groups of two or more. Eg. Blue, Grey and Black. If you have a group, try and coordinate everyone with similar and complimentary tones.
Try to choose Classic styles that wont date so your images are still fashionable in year to come.
Bring hats, hair pieces, scarves or accessories that show your personality and style and some favourite toys and accessories for the little ones.
Wrinkled clothing can potentially spoil your end result. Bring your clothing on hangers as we have a cloths horse to hang items on.
Dress for Full Length, even if you are not planning on full length shoots. There may be something that comes up where you need shoes.
Definitely bring your sense of humour and expectation of having some fun