How should a female college grad dress? (i wear junior size 1)?

so now i wear a&f, ae, forever 21, and gap. maybe old navy and banana republic from time to time. i pretty much dress with clic pieces polos, plain colorful shirts, jeans, khakis. pumas, rocket dogs, and flats. i wear a size one in juniors, so i can fit an xs in gap and old navy, but i kinda don't want to dress like im still in college for too long. so any suggestions to what i should wear?