Hi Flyboii!
Firstly, isn't Macy's meant to be a fairly upper-class store? (I'm in Aus, so we don't have Macy's here) If so, I'd be definately dressing up rather than down.
In terms of the colours, what looks best is difficult. My instinct is that given you have a very limited wardrobe and it is possible the beige is more of a casual look, I'd probably be more inclined to go with the black. (From reading on here, I've also learnt that beige trousers can be more difficult to carry off well and still look fab. Of course it can be done, it just seems more tricky!)
Given you haven't got any fancy shoes, I'd still be willing to guess you have black shoes. Give them a polish so that they look super shiny/good condition and wear these with the black pants.
Check the length of your trousers - if your trousers are dragging on the ground it isn't a great look. If your ankles are giving you a sense of airconditioning, that can look a tad dodgy too, depending on the gap between top of shoe and bottom of trouser.
Here's an article that should give you a few extra pointers to help lift the outfit:
http://youlookfab.com/2010/08/.....teresting/
I'm inclined to think that regardless of what you decide to wear, it goes without saying that you need to take extra care with your grooming - hair / neat and tidy appearance(ie shave your face and clip your nails etc) is really important here.
If you are game, I do have to say that the easiest way for the forum to help you would be to post some pictures of some different combos and then we can help you pull the outfit together from there!
Good luck anyway!
