Ladies please...What is the best attire for a young lady to wear for a nursing entrance interview?

Ok. So I ain't super skinny so I prefer something with pants... but I wanna what you would wear. What colors for pant-suit/skirt-suit/dress? Blouse color? Accents? Jewelry? Shoes? Purses? Make-up? Mix-and-Match? Any suggested companies or stores? Nothing too expensive ... But I mainly need help with colors and what exactly to wear... I always end up dressing like an old grandma. I'm 19. I have olive/light brown skin color. I have black/dark brown hair and brown eyes. The interviewer is a woman, so everyone has suggested to go as conservative as possible. And it is for nursing school. So I need to be all covered-up! So no sleeveless or anything revealing. All suggestions and stores welcome! Thanks for any and all of your help.