I work in an office so its pretty much office casual...I could wear a nice dress or jeans and tennis shoes and both would be fine, I would never wear shorts though.

I have been wearing flip flops this week because a new pair of reef sandals caused a sore on the top of my foot. (Glad I paid 40 dollars for comfortable sandals) I usually love the reef sandals but I usually get the flat ones, this time I tried to get the high ones and they rubbed my foot wrong.