Necklaces! I cannot say it enough--accessorize your session. :) Also, if you come with hair up but want hair down later, make sure it is styled in a way that will not leave it with a dent later (braids work great or messy buns with without a hair band).
Love the slouchy off the shoulder relaxed thsirt with the lighweight neck scarf wrapped- casual ponytail, slouchy big purse, skinny jeans and dressier sneakers. Killer smile and aviator sunglasses are the perfect finishing touches!