The phrase "outfit options" refers to different choices or possibilities for clothing that you can wear for a particular occasion or event. Full definition
A plain top with an interesting skirt can still give lots of outfit options for that skirt. (unefemme.net)
They are by far the easiest and cutest of outfit options and the best go to when I am in a rush out the door. (modernensemble.com)
The next time you are debating on what color to pick for a shoe, try brown or beige, you will get more outfit options with those colors. (spoonsandstilettos.com)