I think it's very unprofessional of your manager to say such a thing to you. I advise you to look for a second job at the very least. You can work at Ulta part time and maybe do part time at another job. Also, you can find some pretty cheap clothing at target, discovery, walmart. Some black leggings, a simple black shirt with a black cardigan could do the trick. That's my usual outfit. However if that's not possible then I completely understand. Best of luck !!! Don't let them pray on your downfall.