Beauty and Style

im going shopping in a couple of weeks, because my closet sucks. i cant put any outfit together right. i own only 3 pairs of pants. two of them but they don’t fit my right at all! the one pair i wear three times a week. i like Selena gomez’s style but im scared to wear Accessories. do you have any tips on shopping, looking like Selena, having comfinents in my self, put outfits together, what type of jeans to get(color, how many and if i should get some sweastpants(color, what would go with them) and little accerceries)

thanks